From 79c59acc7af08ede23167b8455de4b716f77601f Mon Sep 17 00:00:00 2001
From: hardythe1
Date: Thu, 11 Jun 2015 17:31:11 +0530
Subject: add books

---
 .../chapter10.ipynb                                | 711 ++++++++++++++++++
 .../chapter10_1.ipynb                              | 711 ++++++++++++++++++
 .../chapter10_10.ipynb                             | 711 ++++++++++++++++++
 .../chapter10_11.ipynb                             | 711 ++++++++++++++++++
 .../chapter10_12.ipynb                             | 711 ++++++++++++++++++
 .../chapter10_13.ipynb                             | 711 ++++++++++++++++++
 .../chapter10_14.ipynb                             | 711 ++++++++++++++++++
 .../chapter10_15.ipynb                             | 711 ++++++++++++++++++
 .../chapter10_2.ipynb                              | 711 ++++++++++++++++++
 .../chapter10_3.ipynb                              | 711 ++++++++++++++++++
 .../chapter10_4.ipynb                              | 711 ++++++++++++++++++
 .../chapter10_5.ipynb                              | 711 ++++++++++++++++++
 .../chapter10_6.ipynb                              | 711 ++++++++++++++++++
 .../chapter10_7.ipynb                              | 711 ++++++++++++++++++
 .../chapter10_8.ipynb                              | 711 ++++++++++++++++++
 .../chapter10_9.ipynb                              | 711 ++++++++++++++++++
 .../chapter11.ipynb                                | 404 ++++++++++
 .../chapter11_1.ipynb                              | 404 ++++++++++
 .../chapter11_10.ipynb                             | 404 ++++++++++
 .../chapter11_11.ipynb                             | 404 ++++++++++
 .../chapter11_12.ipynb                             | 404 ++++++++++
 .../chapter11_13.ipynb                             | 404 ++++++++++
 .../chapter11_14.ipynb                             | 404 ++++++++++
 .../chapter11_15.ipynb                             | 404 ++++++++++
 .../chapter11_2.ipynb                              | 404 ++++++++++
 .../chapter11_3.ipynb                              | 404 ++++++++++
 .../chapter11_4.ipynb                              | 404 ++++++++++
 .../chapter11_5.ipynb                              | 404 ++++++++++
 .../chapter11_6.ipynb                              | 404 ++++++++++
 .../chapter11_7.ipynb                              | 404 ++++++++++
 .../chapter11_8.ipynb                              | 404 ++++++++++
 .../chapter11_9.ipynb                              | 404 ++++++++++
 .../chapter12.ipynb                                | 436 +++++++++++
 .../chapter12_1.ipynb                              | 436 +++++++++++
 .../chapter12_10.ipynb                             | 436 +++++++++++
 .../chapter12_11.ipynb                             | 436 +++++++++++
 .../chapter12_12.ipynb                             | 436 +++++++++++
 .../chapter12_13.ipynb                             | 436 +++++++++++
 .../chapter12_14.ipynb                             | 436 +++++++++++
 .../chapter12_15.ipynb                             | 436 +++++++++++
 .../chapter12_2.ipynb                              | 436 +++++++++++
 .../chapter12_3.ipynb                              | 436 +++++++++++
 .../chapter12_4.ipynb                              | 436 +++++++++++
 .../chapter12_5.ipynb                              | 436 +++++++++++
 .../chapter12_6.ipynb                              | 436 +++++++++++
 .../chapter12_7.ipynb                              | 436 +++++++++++
 .../chapter12_8.ipynb                              | 436 +++++++++++
 .../chapter12_9.ipynb                              | 436 +++++++++++
 .../chapter13.ipynb                                | 125 ++++
 .../chapter13_1.ipynb                              | 125 ++++
 .../chapter13_10.ipynb                             | 125 ++++
 .../chapter13_11.ipynb                             | 125 ++++
 .../chapter13_12.ipynb                             | 125 ++++
 .../chapter13_13.ipynb                             | 125 ++++
 .../chapter13_14.ipynb                             | 125 ++++
 .../chapter13_15.ipynb                             | 125 ++++
 .../chapter13_2.ipynb                              | 125 ++++
 .../chapter13_3.ipynb                              | 125 ++++
 .../chapter13_4.ipynb                              | 125 ++++
 .../chapter13_5.ipynb                              | 125 ++++
 .../chapter13_6.ipynb                              | 125 ++++
 .../chapter13_7.ipynb                              | 125 ++++
 .../chapter13_8.ipynb                              | 125 ++++
 .../chapter13_9.ipynb                              | 125 ++++
 .../chapter15.ipynb                                | 384 ++++++++++
 .../chapter15_1.ipynb                              | 384 ++++++++++
 .../chapter15_10.ipynb                             | 384 ++++++++++
 .../chapter15_11.ipynb                             | 384 ++++++++++
 .../chapter15_12.ipynb                             | 384 ++++++++++
 .../chapter15_13.ipynb                             | 384 ++++++++++
 .../chapter15_14.ipynb                             | 384 ++++++++++
 .../chapter15_15.ipynb                             | 384 ++++++++++
 .../chapter15_2.ipynb                              | 384 ++++++++++
 .../chapter15_3.ipynb                              | 384 ++++++++++
 .../chapter15_4.ipynb                              | 384 ++++++++++
 .../chapter15_5.ipynb                              | 384 ++++++++++
 .../chapter15_6.ipynb                              | 384 ++++++++++
 .../chapter15_7.ipynb                              | 384 ++++++++++
 .../chapter15_8.ipynb                              | 384 ++++++++++
 .../chapter15_9.ipynb                              | 384 ++++++++++
 .../chapter5.ipynb                                 |  50 ++
 .../chapter5_1.ipynb                               |  50 ++
 .../chapter5_10.ipynb                              |  50 ++
 .../chapter5_11.ipynb                              |  50 ++
 .../chapter5_12.ipynb                              |  50 ++
 .../chapter5_13.ipynb                              |  50 ++
 .../chapter5_14.ipynb                              |  50 ++
 .../chapter5_15.ipynb                              |  50 ++
 .../chapter5_2.ipynb                               |  50 ++
 .../chapter5_3.ipynb                               |  50 ++
 .../chapter5_4.ipynb                               |  50 ++
 .../chapter5_5.ipynb                               |  50 ++
 .../chapter5_6.ipynb                               |  50 ++
 .../chapter5_7.ipynb                               |  50 ++
 .../chapter5_8.ipynb                               |  50 ++
 .../chapter5_9.ipynb                               |  50 ++
 .../chapter6.ipynb                                 | 161 ++++
 .../chapter6_1.ipynb                               | 161 ++++
 .../chapter6_10.ipynb                              | 161 ++++
 .../chapter6_11.ipynb                              | 161 ++++
 .../chapter6_12.ipynb                              | 161 ++++
 .../chapter6_13.ipynb                              | 161 ++++
 .../chapter6_14.ipynb                              | 161 ++++
 .../chapter6_15.ipynb                              | 161 ++++
 .../chapter6_2.ipynb                               | 161 ++++
 .../chapter6_3.ipynb                               | 161 ++++
 .../chapter6_4.ipynb                               | 161 ++++
 .../chapter6_5.ipynb                               | 161 ++++
 .../chapter6_6.ipynb                               | 161 ++++
 .../chapter6_7.ipynb                               | 161 ++++
 .../chapter6_8.ipynb                               | 161 ++++
 .../chapter6_9.ipynb                               | 161 ++++
 .../chapter7.ipynb                                 | 114 +++
 .../chapter7_1.ipynb                               | 114 +++
 .../chapter7_10.ipynb                              | 114 +++
 .../chapter7_11.ipynb                              | 114 +++
 .../chapter7_12.ipynb                              | 114 +++
 .../chapter7_13.ipynb                              | 114 +++
 .../chapter7_14.ipynb                              | 114 +++
 .../chapter7_15.ipynb                              | 114 +++
 .../chapter7_2.ipynb                               | 114 +++
 .../chapter7_3.ipynb                               | 114 +++
 .../chapter7_4.ipynb                               | 114 +++
 .../chapter7_5.ipynb                               | 114 +++
 .../chapter7_6.ipynb                               | 114 +++
 .../chapter7_7.ipynb                               | 114 +++
 .../chapter7_8.ipynb                               | 114 +++
 .../chapter7_9.ipynb                               | 114 +++
 .../chapter8.ipynb                                 | 139 ++++
 .../chapter8_1.ipynb                               | 139 ++++
 .../chapter8_10.ipynb                              | 139 ++++
 .../chapter8_11.ipynb                              | 139 ++++
 .../chapter8_12.ipynb                              | 139 ++++
 .../chapter8_13.ipynb                              | 139 ++++
 .../chapter8_14.ipynb                              | 139 ++++
 .../chapter8_15.ipynb                              | 139 ++++
 .../chapter8_2.ipynb                               | 139 ++++
 .../chapter8_3.ipynb                               | 139 ++++
 .../chapter8_4.ipynb                               | 139 ++++
 .../chapter8_5.ipynb                               | 139 ++++
 .../chapter8_6.ipynb                               | 139 ++++
 .../chapter8_7.ipynb                               | 139 ++++
 .../chapter8_8.ipynb                               | 139 ++++
 .../chapter8_9.ipynb                               | 139 ++++
 .../chapter9.ipynb                                 | 832 +++++++++++++++++++++
 .../chapter9_1.ipynb                               | 832 +++++++++++++++++++++
 .../chapter9_10.ipynb                              | 832 +++++++++++++++++++++
 .../chapter9_11.ipynb                              | 832 +++++++++++++++++++++
 .../chapter9_12.ipynb                              | 832 +++++++++++++++++++++
 .../chapter9_13.ipynb                              | 832 +++++++++++++++++++++
 .../chapter9_14.ipynb                              | 832 +++++++++++++++++++++
 .../chapter9_15.ipynb                              | 832 +++++++++++++++++++++
 .../chapter9_2.ipynb                               | 832 +++++++++++++++++++++
 .../chapter9_3.ipynb                               | 832 +++++++++++++++++++++
 .../chapter9_4.ipynb                               | 832 +++++++++++++++++++++
 .../chapter9_5.ipynb                               | 832 +++++++++++++++++++++
 .../chapter9_6.ipynb                               | 832 +++++++++++++++++++++
 .../chapter9_7.ipynb                               | 832 +++++++++++++++++++++
 .../chapter9_8.ipynb                               | 832 +++++++++++++++++++++
 .../chapter9_9.ipynb                               | 832 +++++++++++++++++++++
 160 files changed, 53696 insertions(+)
 create mode 100755 Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10.ipynb
 create mode 100755 Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10_1.ipynb
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 create mode 100755 Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10_15.ipynb
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 create mode 100755 Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10_3.ipynb
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 create mode 100755 Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10_6.ipynb
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 create mode 100755 Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10_8.ipynb
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 create mode 100755 Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11.ipynb
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 create mode 100755 Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11_14.ipynb
 create mode 100755 Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11_15.ipynb
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 create mode 100755 Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_1.ipynb
 create mode 100755 Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_10.ipynb
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 create mode 100755 Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_13.ipynb
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 create mode 100755 Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_15.ipynb
 create mode 100755 Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_2.ipynb
 create mode 100755 Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_3.ipynb
 create mode 100755 Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_4.ipynb
 create mode 100755 Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_5.ipynb
 create mode 100755 Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_6.ipynb
 create mode 100755 Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_7.ipynb
 create mode 100755 Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_8.ipynb
 create mode 100755 Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_9.ipynb

(limited to 'Computer_Concepts_and_C_Programming_by_R.Rajaram')

diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10.ipynb
new file mode 100755
index 00000000..db2cb5a6
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10.ipynb
@@ -0,0 +1,711 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:a2d2127f6a5ebfde55eb11899a94f93b6aeee78155a32ab8e434ae8b263ad3b3"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "10 : ARRAYS"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.2.1,page number:170"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "value = [6]\n",
+      "\n",
+      "for index in range(0,6):\n",
+      "    print \"Enter Integer\"\n",
+      "    value.append(int(input()))\n",
+      "for index in range(0,7):\n",
+      "    print \"Integer = \",value[index]"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "4\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "12\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "7\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "13\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Integer =  6\n",
+        "Integer =  4\n",
+        "Integer =  6\n",
+        "Integer =  12\n",
+        "Integer =  6\n",
+        "Integer =  7\n",
+        "Integer =  13\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.3.1, page number:170"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "value=[6,4,3,2,1]\n",
+      "for index in xrange(5):\n",
+      "    print \"Integer = \",value[index]"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Integer =  6\n",
+        "Integer =  4\n",
+        "Integer =  3\n",
+        "Integer =  2\n",
+        "Integer =  1\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.3.2, page number:171"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "def MAX_SIZE_CONST():\n",
+      "    return 123\n",
+      "def TRAILER_CONST():\n",
+      "    return -7777\n",
+      "value=array.array('i',[])\n",
+      "print \"Enter upto\",MAX_SIZE_CONST(),\"using\",TRAILER_CONST(),\"as trailer :\"\n",
+      "print \"\"\n",
+      "m=0\n",
+      "for index in range(0,int(MAX_SIZE_CONST())):\n",
+      "    item=int(input())\n",
+      "    if(item == int(TRAILER_CONST())):\n",
+      "        break\n",
+      "    else:\n",
+      "        value.append(item)\n",
+      "        m+=1\n",
+      "for index in range(0,m):\n",
+      "    print \"Integer =\",value[index]"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter upto 123 using -7777 as trailer :\n",
+        "\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "2\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "3\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "4\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "-7777\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Integer = 1\n",
+        "Integer = 2\n",
+        "Integer = 3\n",
+        "Integer = 4\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.4.1, page number:172"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "k=0\n",
+      "sum=0.0\n",
+      "def MAX_STUD():\n",
+      "    return 20\n",
+      "def ENDINP():\n",
+      "    return -9999\n",
+      "mark=array.array('i',(0 for i in range(0,MAX_STUD())))\n",
+      "print \"enter upto\",MAX_STUD(),\"marks:\"\n",
+      "readin=int(input())\n",
+      "for index in range(0,MAX_STUD()):\n",
+      "    if(readin != ENDINP()):\n",
+      "        mark[index]=readin\n",
+      "        readin=int(input())\n",
+      "        k+=1\n",
+      "for index in xrange(0,k):\n",
+      "    sum=sum+mark[index]\n",
+      "print \"Average Mark = \",sum/k\n",
+      "    "
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "enter upto 20 marks:\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "34\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "66\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "78\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "65\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "43\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "23\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "12\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "88\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "-9999\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Average Mark =  51.125\n"
+       ]
+      }
+     ],
+     "prompt_number": 4
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.5.1, page number:174"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "def MAX_SIZE():\n",
+      "    return 10\n",
+      "#str=array.array('i',(0 for i in range(0,MAX_SIZE()+1)))\n",
+      "print \"Enter the 10 letter word.\"\n",
+      "str=raw_input()\n",
+      "r=[]\n",
+      "for letter in str:\n",
+      "    r.append(letter)\n",
+      "r.reverse()\n",
+      "print \"word = \",str\n",
+      "print \"\".join(r)\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the 10 letter word.\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "madurai\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "word =  madurai\n",
+        "iarudam\n"
+       ]
+      }
+     ],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.6.1, page number:175"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "def MAX_SIZE():\n",
+      "    return 20\n",
+      "size=0\n",
+      "variable =array.array('i',[])\n",
+      "while True:\n",
+      "    print \"Array-size : ?\"\n",
+      "    size=int(input())\n",
+      "    if size>1 and size<MAX_SIZE():\n",
+      "        break\n",
+      "print \"Enter Numbers:\"\n",
+      "for k in range(0,size):\n",
+      "    m=int(input())\n",
+      "    variable.append(m)\n",
+      "\n",
+      "variable= array.array('i',sorted(variable))\n",
+      "\n",
+      "print \"Sorted Array is:\"\n",
+      "for k in range(0,size):\n",
+      "    print variable[k],\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Array-size : ?\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "9\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Numbers:\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "7\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "10\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "43\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "0\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "-5\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "14\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "8\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "9\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Sorted Array is:\n",
+        "-5 0 6 7 8 9 10 14 43\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.7.1,page number:176"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "pox =[[0 for x in range(4)]for x in range(6)]\n",
+      "pox[0]=3,5,7,9,12,20\n",
+      "pox[1]=10,13,17,21,25,40\n",
+      "pox[2]=15,18,22,26,30,45\n",
+      "pox[3]=17,20,23,27,32,46\n",
+      "\n",
+      "def read_city():\n",
+      "    running=True\n",
+      "    while running:\n",
+      "        print \"Which city?\"\n",
+      "        city=int(input())\n",
+      "        if city == 0:\n",
+      "            exit(1)\n",
+      "        if city<4 or city>4 :\n",
+      "            running=False\n",
+      "    return city\n",
+      "def read_year():\n",
+      "    running=True\n",
+      "    while running:\n",
+      "        print \"Which year?\"\n",
+      "        year=int(input())\n",
+      "        if year>1950 or year<2000 :\n",
+      "            running=False\n",
+      "    return year\n",
+      "def pop(x,y):\n",
+      "    global pox\n",
+      "    return pox[x-1][(y-1950)/10]\n",
+      "\n",
+      "def output_city():\n",
+      "    if city == 1:\n",
+      "        return \"Madurai\"\n",
+      "    elif city == 2:\n",
+      "        return \"Madras\"\n",
+      "    elif city == 3:\n",
+      "        return \"Bombay\"\n",
+      "    elif city == 4:\n",
+      "        return \"Calcutta\"\n",
+      "        \n",
+      "runnable=True\n",
+      "city=read_city()\n",
+      "while runnable :\n",
+      "    year=read_year()\n",
+      "    print \"Population in \",year,\"of\",output_city(),\"is\",pop(city,year),\"Lakhs\"\n",
+      "    city =read_city()\n",
+      "    if city == 0:\n",
+      "        runnable=False"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Which city?\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "3\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Which year?\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1990\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Population in  1990 of Bombay is 30 Lakhs\n",
+        "Which city?\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "0\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10_1.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10_1.ipynb
new file mode 100755
index 00000000..db2cb5a6
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10_1.ipynb
@@ -0,0 +1,711 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:a2d2127f6a5ebfde55eb11899a94f93b6aeee78155a32ab8e434ae8b263ad3b3"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "10 : ARRAYS"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.2.1,page number:170"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "value = [6]\n",
+      "\n",
+      "for index in range(0,6):\n",
+      "    print \"Enter Integer\"\n",
+      "    value.append(int(input()))\n",
+      "for index in range(0,7):\n",
+      "    print \"Integer = \",value[index]"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "4\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "12\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "7\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "13\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Integer =  6\n",
+        "Integer =  4\n",
+        "Integer =  6\n",
+        "Integer =  12\n",
+        "Integer =  6\n",
+        "Integer =  7\n",
+        "Integer =  13\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.3.1, page number:170"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "value=[6,4,3,2,1]\n",
+      "for index in xrange(5):\n",
+      "    print \"Integer = \",value[index]"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Integer =  6\n",
+        "Integer =  4\n",
+        "Integer =  3\n",
+        "Integer =  2\n",
+        "Integer =  1\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.3.2, page number:171"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "def MAX_SIZE_CONST():\n",
+      "    return 123\n",
+      "def TRAILER_CONST():\n",
+      "    return -7777\n",
+      "value=array.array('i',[])\n",
+      "print \"Enter upto\",MAX_SIZE_CONST(),\"using\",TRAILER_CONST(),\"as trailer :\"\n",
+      "print \"\"\n",
+      "m=0\n",
+      "for index in range(0,int(MAX_SIZE_CONST())):\n",
+      "    item=int(input())\n",
+      "    if(item == int(TRAILER_CONST())):\n",
+      "        break\n",
+      "    else:\n",
+      "        value.append(item)\n",
+      "        m+=1\n",
+      "for index in range(0,m):\n",
+      "    print \"Integer =\",value[index]"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter upto 123 using -7777 as trailer :\n",
+        "\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "2\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "3\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "4\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "-7777\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Integer = 1\n",
+        "Integer = 2\n",
+        "Integer = 3\n",
+        "Integer = 4\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.4.1, page number:172"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "k=0\n",
+      "sum=0.0\n",
+      "def MAX_STUD():\n",
+      "    return 20\n",
+      "def ENDINP():\n",
+      "    return -9999\n",
+      "mark=array.array('i',(0 for i in range(0,MAX_STUD())))\n",
+      "print \"enter upto\",MAX_STUD(),\"marks:\"\n",
+      "readin=int(input())\n",
+      "for index in range(0,MAX_STUD()):\n",
+      "    if(readin != ENDINP()):\n",
+      "        mark[index]=readin\n",
+      "        readin=int(input())\n",
+      "        k+=1\n",
+      "for index in xrange(0,k):\n",
+      "    sum=sum+mark[index]\n",
+      "print \"Average Mark = \",sum/k\n",
+      "    "
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "enter upto 20 marks:\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "34\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "66\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "78\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "65\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "43\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "23\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "12\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "88\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "-9999\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Average Mark =  51.125\n"
+       ]
+      }
+     ],
+     "prompt_number": 4
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.5.1, page number:174"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "def MAX_SIZE():\n",
+      "    return 10\n",
+      "#str=array.array('i',(0 for i in range(0,MAX_SIZE()+1)))\n",
+      "print \"Enter the 10 letter word.\"\n",
+      "str=raw_input()\n",
+      "r=[]\n",
+      "for letter in str:\n",
+      "    r.append(letter)\n",
+      "r.reverse()\n",
+      "print \"word = \",str\n",
+      "print \"\".join(r)\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the 10 letter word.\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "madurai\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "word =  madurai\n",
+        "iarudam\n"
+       ]
+      }
+     ],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.6.1, page number:175"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "def MAX_SIZE():\n",
+      "    return 20\n",
+      "size=0\n",
+      "variable =array.array('i',[])\n",
+      "while True:\n",
+      "    print \"Array-size : ?\"\n",
+      "    size=int(input())\n",
+      "    if size>1 and size<MAX_SIZE():\n",
+      "        break\n",
+      "print \"Enter Numbers:\"\n",
+      "for k in range(0,size):\n",
+      "    m=int(input())\n",
+      "    variable.append(m)\n",
+      "\n",
+      "variable= array.array('i',sorted(variable))\n",
+      "\n",
+      "print \"Sorted Array is:\"\n",
+      "for k in range(0,size):\n",
+      "    print variable[k],\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Array-size : ?\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "9\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Numbers:\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "7\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "10\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "43\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "0\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "-5\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "14\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "8\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "9\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Sorted Array is:\n",
+        "-5 0 6 7 8 9 10 14 43\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.7.1,page number:176"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "pox =[[0 for x in range(4)]for x in range(6)]\n",
+      "pox[0]=3,5,7,9,12,20\n",
+      "pox[1]=10,13,17,21,25,40\n",
+      "pox[2]=15,18,22,26,30,45\n",
+      "pox[3]=17,20,23,27,32,46\n",
+      "\n",
+      "def read_city():\n",
+      "    running=True\n",
+      "    while running:\n",
+      "        print \"Which city?\"\n",
+      "        city=int(input())\n",
+      "        if city == 0:\n",
+      "            exit(1)\n",
+      "        if city<4 or city>4 :\n",
+      "            running=False\n",
+      "    return city\n",
+      "def read_year():\n",
+      "    running=True\n",
+      "    while running:\n",
+      "        print \"Which year?\"\n",
+      "        year=int(input())\n",
+      "        if year>1950 or year<2000 :\n",
+      "            running=False\n",
+      "    return year\n",
+      "def pop(x,y):\n",
+      "    global pox\n",
+      "    return pox[x-1][(y-1950)/10]\n",
+      "\n",
+      "def output_city():\n",
+      "    if city == 1:\n",
+      "        return \"Madurai\"\n",
+      "    elif city == 2:\n",
+      "        return \"Madras\"\n",
+      "    elif city == 3:\n",
+      "        return \"Bombay\"\n",
+      "    elif city == 4:\n",
+      "        return \"Calcutta\"\n",
+      "        \n",
+      "runnable=True\n",
+      "city=read_city()\n",
+      "while runnable :\n",
+      "    year=read_year()\n",
+      "    print \"Population in \",year,\"of\",output_city(),\"is\",pop(city,year),\"Lakhs\"\n",
+      "    city =read_city()\n",
+      "    if city == 0:\n",
+      "        runnable=False"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Which city?\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "3\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Which year?\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1990\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Population in  1990 of Bombay is 30 Lakhs\n",
+        "Which city?\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "0\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10_10.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10_10.ipynb
new file mode 100755
index 00000000..db2cb5a6
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10_10.ipynb
@@ -0,0 +1,711 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:a2d2127f6a5ebfde55eb11899a94f93b6aeee78155a32ab8e434ae8b263ad3b3"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "10 : ARRAYS"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.2.1,page number:170"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "value = [6]\n",
+      "\n",
+      "for index in range(0,6):\n",
+      "    print \"Enter Integer\"\n",
+      "    value.append(int(input()))\n",
+      "for index in range(0,7):\n",
+      "    print \"Integer = \",value[index]"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "4\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "12\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "7\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "13\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Integer =  6\n",
+        "Integer =  4\n",
+        "Integer =  6\n",
+        "Integer =  12\n",
+        "Integer =  6\n",
+        "Integer =  7\n",
+        "Integer =  13\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.3.1, page number:170"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "value=[6,4,3,2,1]\n",
+      "for index in xrange(5):\n",
+      "    print \"Integer = \",value[index]"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Integer =  6\n",
+        "Integer =  4\n",
+        "Integer =  3\n",
+        "Integer =  2\n",
+        "Integer =  1\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.3.2, page number:171"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "def MAX_SIZE_CONST():\n",
+      "    return 123\n",
+      "def TRAILER_CONST():\n",
+      "    return -7777\n",
+      "value=array.array('i',[])\n",
+      "print \"Enter upto\",MAX_SIZE_CONST(),\"using\",TRAILER_CONST(),\"as trailer :\"\n",
+      "print \"\"\n",
+      "m=0\n",
+      "for index in range(0,int(MAX_SIZE_CONST())):\n",
+      "    item=int(input())\n",
+      "    if(item == int(TRAILER_CONST())):\n",
+      "        break\n",
+      "    else:\n",
+      "        value.append(item)\n",
+      "        m+=1\n",
+      "for index in range(0,m):\n",
+      "    print \"Integer =\",value[index]"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter upto 123 using -7777 as trailer :\n",
+        "\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "2\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "3\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "4\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "-7777\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Integer = 1\n",
+        "Integer = 2\n",
+        "Integer = 3\n",
+        "Integer = 4\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.4.1, page number:172"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "k=0\n",
+      "sum=0.0\n",
+      "def MAX_STUD():\n",
+      "    return 20\n",
+      "def ENDINP():\n",
+      "    return -9999\n",
+      "mark=array.array('i',(0 for i in range(0,MAX_STUD())))\n",
+      "print \"enter upto\",MAX_STUD(),\"marks:\"\n",
+      "readin=int(input())\n",
+      "for index in range(0,MAX_STUD()):\n",
+      "    if(readin != ENDINP()):\n",
+      "        mark[index]=readin\n",
+      "        readin=int(input())\n",
+      "        k+=1\n",
+      "for index in xrange(0,k):\n",
+      "    sum=sum+mark[index]\n",
+      "print \"Average Mark = \",sum/k\n",
+      "    "
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "enter upto 20 marks:\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "34\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "66\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "78\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "65\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "43\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "23\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "12\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "88\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "-9999\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Average Mark =  51.125\n"
+       ]
+      }
+     ],
+     "prompt_number": 4
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.5.1, page number:174"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "def MAX_SIZE():\n",
+      "    return 10\n",
+      "#str=array.array('i',(0 for i in range(0,MAX_SIZE()+1)))\n",
+      "print \"Enter the 10 letter word.\"\n",
+      "str=raw_input()\n",
+      "r=[]\n",
+      "for letter in str:\n",
+      "    r.append(letter)\n",
+      "r.reverse()\n",
+      "print \"word = \",str\n",
+      "print \"\".join(r)\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the 10 letter word.\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "madurai\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "word =  madurai\n",
+        "iarudam\n"
+       ]
+      }
+     ],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.6.1, page number:175"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "def MAX_SIZE():\n",
+      "    return 20\n",
+      "size=0\n",
+      "variable =array.array('i',[])\n",
+      "while True:\n",
+      "    print \"Array-size : ?\"\n",
+      "    size=int(input())\n",
+      "    if size>1 and size<MAX_SIZE():\n",
+      "        break\n",
+      "print \"Enter Numbers:\"\n",
+      "for k in range(0,size):\n",
+      "    m=int(input())\n",
+      "    variable.append(m)\n",
+      "\n",
+      "variable= array.array('i',sorted(variable))\n",
+      "\n",
+      "print \"Sorted Array is:\"\n",
+      "for k in range(0,size):\n",
+      "    print variable[k],\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Array-size : ?\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "9\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Numbers:\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "7\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "10\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "43\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "0\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "-5\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "14\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "8\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "9\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Sorted Array is:\n",
+        "-5 0 6 7 8 9 10 14 43\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.7.1,page number:176"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "pox =[[0 for x in range(4)]for x in range(6)]\n",
+      "pox[0]=3,5,7,9,12,20\n",
+      "pox[1]=10,13,17,21,25,40\n",
+      "pox[2]=15,18,22,26,30,45\n",
+      "pox[3]=17,20,23,27,32,46\n",
+      "\n",
+      "def read_city():\n",
+      "    running=True\n",
+      "    while running:\n",
+      "        print \"Which city?\"\n",
+      "        city=int(input())\n",
+      "        if city == 0:\n",
+      "            exit(1)\n",
+      "        if city<4 or city>4 :\n",
+      "            running=False\n",
+      "    return city\n",
+      "def read_year():\n",
+      "    running=True\n",
+      "    while running:\n",
+      "        print \"Which year?\"\n",
+      "        year=int(input())\n",
+      "        if year>1950 or year<2000 :\n",
+      "            running=False\n",
+      "    return year\n",
+      "def pop(x,y):\n",
+      "    global pox\n",
+      "    return pox[x-1][(y-1950)/10]\n",
+      "\n",
+      "def output_city():\n",
+      "    if city == 1:\n",
+      "        return \"Madurai\"\n",
+      "    elif city == 2:\n",
+      "        return \"Madras\"\n",
+      "    elif city == 3:\n",
+      "        return \"Bombay\"\n",
+      "    elif city == 4:\n",
+      "        return \"Calcutta\"\n",
+      "        \n",
+      "runnable=True\n",
+      "city=read_city()\n",
+      "while runnable :\n",
+      "    year=read_year()\n",
+      "    print \"Population in \",year,\"of\",output_city(),\"is\",pop(city,year),\"Lakhs\"\n",
+      "    city =read_city()\n",
+      "    if city == 0:\n",
+      "        runnable=False"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Which city?\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "3\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Which year?\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1990\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Population in  1990 of Bombay is 30 Lakhs\n",
+        "Which city?\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "0\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10_11.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10_11.ipynb
new file mode 100755
index 00000000..db2cb5a6
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10_11.ipynb
@@ -0,0 +1,711 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:a2d2127f6a5ebfde55eb11899a94f93b6aeee78155a32ab8e434ae8b263ad3b3"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "10 : ARRAYS"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.2.1,page number:170"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "value = [6]\n",
+      "\n",
+      "for index in range(0,6):\n",
+      "    print \"Enter Integer\"\n",
+      "    value.append(int(input()))\n",
+      "for index in range(0,7):\n",
+      "    print \"Integer = \",value[index]"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "4\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "12\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "7\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "13\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Integer =  6\n",
+        "Integer =  4\n",
+        "Integer =  6\n",
+        "Integer =  12\n",
+        "Integer =  6\n",
+        "Integer =  7\n",
+        "Integer =  13\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.3.1, page number:170"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "value=[6,4,3,2,1]\n",
+      "for index in xrange(5):\n",
+      "    print \"Integer = \",value[index]"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Integer =  6\n",
+        "Integer =  4\n",
+        "Integer =  3\n",
+        "Integer =  2\n",
+        "Integer =  1\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.3.2, page number:171"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "def MAX_SIZE_CONST():\n",
+      "    return 123\n",
+      "def TRAILER_CONST():\n",
+      "    return -7777\n",
+      "value=array.array('i',[])\n",
+      "print \"Enter upto\",MAX_SIZE_CONST(),\"using\",TRAILER_CONST(),\"as trailer :\"\n",
+      "print \"\"\n",
+      "m=0\n",
+      "for index in range(0,int(MAX_SIZE_CONST())):\n",
+      "    item=int(input())\n",
+      "    if(item == int(TRAILER_CONST())):\n",
+      "        break\n",
+      "    else:\n",
+      "        value.append(item)\n",
+      "        m+=1\n",
+      "for index in range(0,m):\n",
+      "    print \"Integer =\",value[index]"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter upto 123 using -7777 as trailer :\n",
+        "\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "2\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "3\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "4\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "-7777\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Integer = 1\n",
+        "Integer = 2\n",
+        "Integer = 3\n",
+        "Integer = 4\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.4.1, page number:172"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "k=0\n",
+      "sum=0.0\n",
+      "def MAX_STUD():\n",
+      "    return 20\n",
+      "def ENDINP():\n",
+      "    return -9999\n",
+      "mark=array.array('i',(0 for i in range(0,MAX_STUD())))\n",
+      "print \"enter upto\",MAX_STUD(),\"marks:\"\n",
+      "readin=int(input())\n",
+      "for index in range(0,MAX_STUD()):\n",
+      "    if(readin != ENDINP()):\n",
+      "        mark[index]=readin\n",
+      "        readin=int(input())\n",
+      "        k+=1\n",
+      "for index in xrange(0,k):\n",
+      "    sum=sum+mark[index]\n",
+      "print \"Average Mark = \",sum/k\n",
+      "    "
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "enter upto 20 marks:\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "34\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "66\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "78\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "65\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "43\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "23\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "12\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "88\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "-9999\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Average Mark =  51.125\n"
+       ]
+      }
+     ],
+     "prompt_number": 4
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.5.1, page number:174"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "def MAX_SIZE():\n",
+      "    return 10\n",
+      "#str=array.array('i',(0 for i in range(0,MAX_SIZE()+1)))\n",
+      "print \"Enter the 10 letter word.\"\n",
+      "str=raw_input()\n",
+      "r=[]\n",
+      "for letter in str:\n",
+      "    r.append(letter)\n",
+      "r.reverse()\n",
+      "print \"word = \",str\n",
+      "print \"\".join(r)\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the 10 letter word.\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "madurai\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "word =  madurai\n",
+        "iarudam\n"
+       ]
+      }
+     ],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.6.1, page number:175"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "def MAX_SIZE():\n",
+      "    return 20\n",
+      "size=0\n",
+      "variable =array.array('i',[])\n",
+      "while True:\n",
+      "    print \"Array-size : ?\"\n",
+      "    size=int(input())\n",
+      "    if size>1 and size<MAX_SIZE():\n",
+      "        break\n",
+      "print \"Enter Numbers:\"\n",
+      "for k in range(0,size):\n",
+      "    m=int(input())\n",
+      "    variable.append(m)\n",
+      "\n",
+      "variable= array.array('i',sorted(variable))\n",
+      "\n",
+      "print \"Sorted Array is:\"\n",
+      "for k in range(0,size):\n",
+      "    print variable[k],\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Array-size : ?\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "9\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Numbers:\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "7\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "10\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "43\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "0\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "-5\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "14\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "8\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "9\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Sorted Array is:\n",
+        "-5 0 6 7 8 9 10 14 43\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.7.1,page number:176"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "pox =[[0 for x in range(4)]for x in range(6)]\n",
+      "pox[0]=3,5,7,9,12,20\n",
+      "pox[1]=10,13,17,21,25,40\n",
+      "pox[2]=15,18,22,26,30,45\n",
+      "pox[3]=17,20,23,27,32,46\n",
+      "\n",
+      "def read_city():\n",
+      "    running=True\n",
+      "    while running:\n",
+      "        print \"Which city?\"\n",
+      "        city=int(input())\n",
+      "        if city == 0:\n",
+      "            exit(1)\n",
+      "        if city<4 or city>4 :\n",
+      "            running=False\n",
+      "    return city\n",
+      "def read_year():\n",
+      "    running=True\n",
+      "    while running:\n",
+      "        print \"Which year?\"\n",
+      "        year=int(input())\n",
+      "        if year>1950 or year<2000 :\n",
+      "            running=False\n",
+      "    return year\n",
+      "def pop(x,y):\n",
+      "    global pox\n",
+      "    return pox[x-1][(y-1950)/10]\n",
+      "\n",
+      "def output_city():\n",
+      "    if city == 1:\n",
+      "        return \"Madurai\"\n",
+      "    elif city == 2:\n",
+      "        return \"Madras\"\n",
+      "    elif city == 3:\n",
+      "        return \"Bombay\"\n",
+      "    elif city == 4:\n",
+      "        return \"Calcutta\"\n",
+      "        \n",
+      "runnable=True\n",
+      "city=read_city()\n",
+      "while runnable :\n",
+      "    year=read_year()\n",
+      "    print \"Population in \",year,\"of\",output_city(),\"is\",pop(city,year),\"Lakhs\"\n",
+      "    city =read_city()\n",
+      "    if city == 0:\n",
+      "        runnable=False"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Which city?\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "3\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Which year?\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1990\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Population in  1990 of Bombay is 30 Lakhs\n",
+        "Which city?\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "0\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10_12.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10_12.ipynb
new file mode 100755
index 00000000..db2cb5a6
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10_12.ipynb
@@ -0,0 +1,711 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:a2d2127f6a5ebfde55eb11899a94f93b6aeee78155a32ab8e434ae8b263ad3b3"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "10 : ARRAYS"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.2.1,page number:170"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "value = [6]\n",
+      "\n",
+      "for index in range(0,6):\n",
+      "    print \"Enter Integer\"\n",
+      "    value.append(int(input()))\n",
+      "for index in range(0,7):\n",
+      "    print \"Integer = \",value[index]"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "4\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "12\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "7\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "13\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Integer =  6\n",
+        "Integer =  4\n",
+        "Integer =  6\n",
+        "Integer =  12\n",
+        "Integer =  6\n",
+        "Integer =  7\n",
+        "Integer =  13\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.3.1, page number:170"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "value=[6,4,3,2,1]\n",
+      "for index in xrange(5):\n",
+      "    print \"Integer = \",value[index]"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Integer =  6\n",
+        "Integer =  4\n",
+        "Integer =  3\n",
+        "Integer =  2\n",
+        "Integer =  1\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.3.2, page number:171"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "def MAX_SIZE_CONST():\n",
+      "    return 123\n",
+      "def TRAILER_CONST():\n",
+      "    return -7777\n",
+      "value=array.array('i',[])\n",
+      "print \"Enter upto\",MAX_SIZE_CONST(),\"using\",TRAILER_CONST(),\"as trailer :\"\n",
+      "print \"\"\n",
+      "m=0\n",
+      "for index in range(0,int(MAX_SIZE_CONST())):\n",
+      "    item=int(input())\n",
+      "    if(item == int(TRAILER_CONST())):\n",
+      "        break\n",
+      "    else:\n",
+      "        value.append(item)\n",
+      "        m+=1\n",
+      "for index in range(0,m):\n",
+      "    print \"Integer =\",value[index]"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter upto 123 using -7777 as trailer :\n",
+        "\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "2\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "3\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "4\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "-7777\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Integer = 1\n",
+        "Integer = 2\n",
+        "Integer = 3\n",
+        "Integer = 4\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.4.1, page number:172"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "k=0\n",
+      "sum=0.0\n",
+      "def MAX_STUD():\n",
+      "    return 20\n",
+      "def ENDINP():\n",
+      "    return -9999\n",
+      "mark=array.array('i',(0 for i in range(0,MAX_STUD())))\n",
+      "print \"enter upto\",MAX_STUD(),\"marks:\"\n",
+      "readin=int(input())\n",
+      "for index in range(0,MAX_STUD()):\n",
+      "    if(readin != ENDINP()):\n",
+      "        mark[index]=readin\n",
+      "        readin=int(input())\n",
+      "        k+=1\n",
+      "for index in xrange(0,k):\n",
+      "    sum=sum+mark[index]\n",
+      "print \"Average Mark = \",sum/k\n",
+      "    "
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "enter upto 20 marks:\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "34\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "66\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "78\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "65\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "43\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "23\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "12\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "88\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "-9999\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Average Mark =  51.125\n"
+       ]
+      }
+     ],
+     "prompt_number": 4
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.5.1, page number:174"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "def MAX_SIZE():\n",
+      "    return 10\n",
+      "#str=array.array('i',(0 for i in range(0,MAX_SIZE()+1)))\n",
+      "print \"Enter the 10 letter word.\"\n",
+      "str=raw_input()\n",
+      "r=[]\n",
+      "for letter in str:\n",
+      "    r.append(letter)\n",
+      "r.reverse()\n",
+      "print \"word = \",str\n",
+      "print \"\".join(r)\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the 10 letter word.\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "madurai\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "word =  madurai\n",
+        "iarudam\n"
+       ]
+      }
+     ],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.6.1, page number:175"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "def MAX_SIZE():\n",
+      "    return 20\n",
+      "size=0\n",
+      "variable =array.array('i',[])\n",
+      "while True:\n",
+      "    print \"Array-size : ?\"\n",
+      "    size=int(input())\n",
+      "    if size>1 and size<MAX_SIZE():\n",
+      "        break\n",
+      "print \"Enter Numbers:\"\n",
+      "for k in range(0,size):\n",
+      "    m=int(input())\n",
+      "    variable.append(m)\n",
+      "\n",
+      "variable= array.array('i',sorted(variable))\n",
+      "\n",
+      "print \"Sorted Array is:\"\n",
+      "for k in range(0,size):\n",
+      "    print variable[k],\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Array-size : ?\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "9\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Numbers:\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "7\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "10\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "43\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "0\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "-5\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "14\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "8\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "9\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Sorted Array is:\n",
+        "-5 0 6 7 8 9 10 14 43\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.7.1,page number:176"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "pox =[[0 for x in range(4)]for x in range(6)]\n",
+      "pox[0]=3,5,7,9,12,20\n",
+      "pox[1]=10,13,17,21,25,40\n",
+      "pox[2]=15,18,22,26,30,45\n",
+      "pox[3]=17,20,23,27,32,46\n",
+      "\n",
+      "def read_city():\n",
+      "    running=True\n",
+      "    while running:\n",
+      "        print \"Which city?\"\n",
+      "        city=int(input())\n",
+      "        if city == 0:\n",
+      "            exit(1)\n",
+      "        if city<4 or city>4 :\n",
+      "            running=False\n",
+      "    return city\n",
+      "def read_year():\n",
+      "    running=True\n",
+      "    while running:\n",
+      "        print \"Which year?\"\n",
+      "        year=int(input())\n",
+      "        if year>1950 or year<2000 :\n",
+      "            running=False\n",
+      "    return year\n",
+      "def pop(x,y):\n",
+      "    global pox\n",
+      "    return pox[x-1][(y-1950)/10]\n",
+      "\n",
+      "def output_city():\n",
+      "    if city == 1:\n",
+      "        return \"Madurai\"\n",
+      "    elif city == 2:\n",
+      "        return \"Madras\"\n",
+      "    elif city == 3:\n",
+      "        return \"Bombay\"\n",
+      "    elif city == 4:\n",
+      "        return \"Calcutta\"\n",
+      "        \n",
+      "runnable=True\n",
+      "city=read_city()\n",
+      "while runnable :\n",
+      "    year=read_year()\n",
+      "    print \"Population in \",year,\"of\",output_city(),\"is\",pop(city,year),\"Lakhs\"\n",
+      "    city =read_city()\n",
+      "    if city == 0:\n",
+      "        runnable=False"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Which city?\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "3\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Which year?\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1990\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Population in  1990 of Bombay is 30 Lakhs\n",
+        "Which city?\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "0\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10_13.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10_13.ipynb
new file mode 100755
index 00000000..db2cb5a6
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10_13.ipynb
@@ -0,0 +1,711 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:a2d2127f6a5ebfde55eb11899a94f93b6aeee78155a32ab8e434ae8b263ad3b3"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "10 : ARRAYS"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.2.1,page number:170"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "value = [6]\n",
+      "\n",
+      "for index in range(0,6):\n",
+      "    print \"Enter Integer\"\n",
+      "    value.append(int(input()))\n",
+      "for index in range(0,7):\n",
+      "    print \"Integer = \",value[index]"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "4\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "12\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "7\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "13\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Integer =  6\n",
+        "Integer =  4\n",
+        "Integer =  6\n",
+        "Integer =  12\n",
+        "Integer =  6\n",
+        "Integer =  7\n",
+        "Integer =  13\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.3.1, page number:170"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "value=[6,4,3,2,1]\n",
+      "for index in xrange(5):\n",
+      "    print \"Integer = \",value[index]"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Integer =  6\n",
+        "Integer =  4\n",
+        "Integer =  3\n",
+        "Integer =  2\n",
+        "Integer =  1\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.3.2, page number:171"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "def MAX_SIZE_CONST():\n",
+      "    return 123\n",
+      "def TRAILER_CONST():\n",
+      "    return -7777\n",
+      "value=array.array('i',[])\n",
+      "print \"Enter upto\",MAX_SIZE_CONST(),\"using\",TRAILER_CONST(),\"as trailer :\"\n",
+      "print \"\"\n",
+      "m=0\n",
+      "for index in range(0,int(MAX_SIZE_CONST())):\n",
+      "    item=int(input())\n",
+      "    if(item == int(TRAILER_CONST())):\n",
+      "        break\n",
+      "    else:\n",
+      "        value.append(item)\n",
+      "        m+=1\n",
+      "for index in range(0,m):\n",
+      "    print \"Integer =\",value[index]"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter upto 123 using -7777 as trailer :\n",
+        "\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "2\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "3\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "4\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "-7777\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Integer = 1\n",
+        "Integer = 2\n",
+        "Integer = 3\n",
+        "Integer = 4\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.4.1, page number:172"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "k=0\n",
+      "sum=0.0\n",
+      "def MAX_STUD():\n",
+      "    return 20\n",
+      "def ENDINP():\n",
+      "    return -9999\n",
+      "mark=array.array('i',(0 for i in range(0,MAX_STUD())))\n",
+      "print \"enter upto\",MAX_STUD(),\"marks:\"\n",
+      "readin=int(input())\n",
+      "for index in range(0,MAX_STUD()):\n",
+      "    if(readin != ENDINP()):\n",
+      "        mark[index]=readin\n",
+      "        readin=int(input())\n",
+      "        k+=1\n",
+      "for index in xrange(0,k):\n",
+      "    sum=sum+mark[index]\n",
+      "print \"Average Mark = \",sum/k\n",
+      "    "
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "enter upto 20 marks:\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "34\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "66\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "78\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "65\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "43\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "23\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "12\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "88\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "-9999\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Average Mark =  51.125\n"
+       ]
+      }
+     ],
+     "prompt_number": 4
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.5.1, page number:174"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "def MAX_SIZE():\n",
+      "    return 10\n",
+      "#str=array.array('i',(0 for i in range(0,MAX_SIZE()+1)))\n",
+      "print \"Enter the 10 letter word.\"\n",
+      "str=raw_input()\n",
+      "r=[]\n",
+      "for letter in str:\n",
+      "    r.append(letter)\n",
+      "r.reverse()\n",
+      "print \"word = \",str\n",
+      "print \"\".join(r)\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the 10 letter word.\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "madurai\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "word =  madurai\n",
+        "iarudam\n"
+       ]
+      }
+     ],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.6.1, page number:175"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "def MAX_SIZE():\n",
+      "    return 20\n",
+      "size=0\n",
+      "variable =array.array('i',[])\n",
+      "while True:\n",
+      "    print \"Array-size : ?\"\n",
+      "    size=int(input())\n",
+      "    if size>1 and size<MAX_SIZE():\n",
+      "        break\n",
+      "print \"Enter Numbers:\"\n",
+      "for k in range(0,size):\n",
+      "    m=int(input())\n",
+      "    variable.append(m)\n",
+      "\n",
+      "variable= array.array('i',sorted(variable))\n",
+      "\n",
+      "print \"Sorted Array is:\"\n",
+      "for k in range(0,size):\n",
+      "    print variable[k],\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Array-size : ?\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "9\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Numbers:\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "7\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "10\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "43\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "0\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "-5\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "14\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "8\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "9\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Sorted Array is:\n",
+        "-5 0 6 7 8 9 10 14 43\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.7.1,page number:176"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "pox =[[0 for x in range(4)]for x in range(6)]\n",
+      "pox[0]=3,5,7,9,12,20\n",
+      "pox[1]=10,13,17,21,25,40\n",
+      "pox[2]=15,18,22,26,30,45\n",
+      "pox[3]=17,20,23,27,32,46\n",
+      "\n",
+      "def read_city():\n",
+      "    running=True\n",
+      "    while running:\n",
+      "        print \"Which city?\"\n",
+      "        city=int(input())\n",
+      "        if city == 0:\n",
+      "            exit(1)\n",
+      "        if city<4 or city>4 :\n",
+      "            running=False\n",
+      "    return city\n",
+      "def read_year():\n",
+      "    running=True\n",
+      "    while running:\n",
+      "        print \"Which year?\"\n",
+      "        year=int(input())\n",
+      "        if year>1950 or year<2000 :\n",
+      "            running=False\n",
+      "    return year\n",
+      "def pop(x,y):\n",
+      "    global pox\n",
+      "    return pox[x-1][(y-1950)/10]\n",
+      "\n",
+      "def output_city():\n",
+      "    if city == 1:\n",
+      "        return \"Madurai\"\n",
+      "    elif city == 2:\n",
+      "        return \"Madras\"\n",
+      "    elif city == 3:\n",
+      "        return \"Bombay\"\n",
+      "    elif city == 4:\n",
+      "        return \"Calcutta\"\n",
+      "        \n",
+      "runnable=True\n",
+      "city=read_city()\n",
+      "while runnable :\n",
+      "    year=read_year()\n",
+      "    print \"Population in \",year,\"of\",output_city(),\"is\",pop(city,year),\"Lakhs\"\n",
+      "    city =read_city()\n",
+      "    if city == 0:\n",
+      "        runnable=False"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Which city?\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "3\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Which year?\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1990\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Population in  1990 of Bombay is 30 Lakhs\n",
+        "Which city?\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "0\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10_14.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10_14.ipynb
new file mode 100755
index 00000000..db2cb5a6
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10_14.ipynb
@@ -0,0 +1,711 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:a2d2127f6a5ebfde55eb11899a94f93b6aeee78155a32ab8e434ae8b263ad3b3"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "10 : ARRAYS"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.2.1,page number:170"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "value = [6]\n",
+      "\n",
+      "for index in range(0,6):\n",
+      "    print \"Enter Integer\"\n",
+      "    value.append(int(input()))\n",
+      "for index in range(0,7):\n",
+      "    print \"Integer = \",value[index]"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "4\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "12\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "7\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "13\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Integer =  6\n",
+        "Integer =  4\n",
+        "Integer =  6\n",
+        "Integer =  12\n",
+        "Integer =  6\n",
+        "Integer =  7\n",
+        "Integer =  13\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.3.1, page number:170"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "value=[6,4,3,2,1]\n",
+      "for index in xrange(5):\n",
+      "    print \"Integer = \",value[index]"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Integer =  6\n",
+        "Integer =  4\n",
+        "Integer =  3\n",
+        "Integer =  2\n",
+        "Integer =  1\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.3.2, page number:171"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "def MAX_SIZE_CONST():\n",
+      "    return 123\n",
+      "def TRAILER_CONST():\n",
+      "    return -7777\n",
+      "value=array.array('i',[])\n",
+      "print \"Enter upto\",MAX_SIZE_CONST(),\"using\",TRAILER_CONST(),\"as trailer :\"\n",
+      "print \"\"\n",
+      "m=0\n",
+      "for index in range(0,int(MAX_SIZE_CONST())):\n",
+      "    item=int(input())\n",
+      "    if(item == int(TRAILER_CONST())):\n",
+      "        break\n",
+      "    else:\n",
+      "        value.append(item)\n",
+      "        m+=1\n",
+      "for index in range(0,m):\n",
+      "    print \"Integer =\",value[index]"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter upto 123 using -7777 as trailer :\n",
+        "\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "2\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "3\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "4\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "-7777\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Integer = 1\n",
+        "Integer = 2\n",
+        "Integer = 3\n",
+        "Integer = 4\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.4.1, page number:172"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "k=0\n",
+      "sum=0.0\n",
+      "def MAX_STUD():\n",
+      "    return 20\n",
+      "def ENDINP():\n",
+      "    return -9999\n",
+      "mark=array.array('i',(0 for i in range(0,MAX_STUD())))\n",
+      "print \"enter upto\",MAX_STUD(),\"marks:\"\n",
+      "readin=int(input())\n",
+      "for index in range(0,MAX_STUD()):\n",
+      "    if(readin != ENDINP()):\n",
+      "        mark[index]=readin\n",
+      "        readin=int(input())\n",
+      "        k+=1\n",
+      "for index in xrange(0,k):\n",
+      "    sum=sum+mark[index]\n",
+      "print \"Average Mark = \",sum/k\n",
+      "    "
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "enter upto 20 marks:\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "34\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "66\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "78\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "65\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "43\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "23\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "12\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "88\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "-9999\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Average Mark =  51.125\n"
+       ]
+      }
+     ],
+     "prompt_number": 4
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.5.1, page number:174"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "def MAX_SIZE():\n",
+      "    return 10\n",
+      "#str=array.array('i',(0 for i in range(0,MAX_SIZE()+1)))\n",
+      "print \"Enter the 10 letter word.\"\n",
+      "str=raw_input()\n",
+      "r=[]\n",
+      "for letter in str:\n",
+      "    r.append(letter)\n",
+      "r.reverse()\n",
+      "print \"word = \",str\n",
+      "print \"\".join(r)\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the 10 letter word.\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "madurai\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "word =  madurai\n",
+        "iarudam\n"
+       ]
+      }
+     ],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.6.1, page number:175"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "def MAX_SIZE():\n",
+      "    return 20\n",
+      "size=0\n",
+      "variable =array.array('i',[])\n",
+      "while True:\n",
+      "    print \"Array-size : ?\"\n",
+      "    size=int(input())\n",
+      "    if size>1 and size<MAX_SIZE():\n",
+      "        break\n",
+      "print \"Enter Numbers:\"\n",
+      "for k in range(0,size):\n",
+      "    m=int(input())\n",
+      "    variable.append(m)\n",
+      "\n",
+      "variable= array.array('i',sorted(variable))\n",
+      "\n",
+      "print \"Sorted Array is:\"\n",
+      "for k in range(0,size):\n",
+      "    print variable[k],\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Array-size : ?\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "9\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Numbers:\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "7\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "10\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "43\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "0\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "-5\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "14\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "8\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "9\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Sorted Array is:\n",
+        "-5 0 6 7 8 9 10 14 43\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.7.1,page number:176"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "pox =[[0 for x in range(4)]for x in range(6)]\n",
+      "pox[0]=3,5,7,9,12,20\n",
+      "pox[1]=10,13,17,21,25,40\n",
+      "pox[2]=15,18,22,26,30,45\n",
+      "pox[3]=17,20,23,27,32,46\n",
+      "\n",
+      "def read_city():\n",
+      "    running=True\n",
+      "    while running:\n",
+      "        print \"Which city?\"\n",
+      "        city=int(input())\n",
+      "        if city == 0:\n",
+      "            exit(1)\n",
+      "        if city<4 or city>4 :\n",
+      "            running=False\n",
+      "    return city\n",
+      "def read_year():\n",
+      "    running=True\n",
+      "    while running:\n",
+      "        print \"Which year?\"\n",
+      "        year=int(input())\n",
+      "        if year>1950 or year<2000 :\n",
+      "            running=False\n",
+      "    return year\n",
+      "def pop(x,y):\n",
+      "    global pox\n",
+      "    return pox[x-1][(y-1950)/10]\n",
+      "\n",
+      "def output_city():\n",
+      "    if city == 1:\n",
+      "        return \"Madurai\"\n",
+      "    elif city == 2:\n",
+      "        return \"Madras\"\n",
+      "    elif city == 3:\n",
+      "        return \"Bombay\"\n",
+      "    elif city == 4:\n",
+      "        return \"Calcutta\"\n",
+      "        \n",
+      "runnable=True\n",
+      "city=read_city()\n",
+      "while runnable :\n",
+      "    year=read_year()\n",
+      "    print \"Population in \",year,\"of\",output_city(),\"is\",pop(city,year),\"Lakhs\"\n",
+      "    city =read_city()\n",
+      "    if city == 0:\n",
+      "        runnable=False"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Which city?\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "3\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Which year?\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1990\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Population in  1990 of Bombay is 30 Lakhs\n",
+        "Which city?\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "0\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10_15.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10_15.ipynb
new file mode 100755
index 00000000..db2cb5a6
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10_15.ipynb
@@ -0,0 +1,711 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:a2d2127f6a5ebfde55eb11899a94f93b6aeee78155a32ab8e434ae8b263ad3b3"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "10 : ARRAYS"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.2.1,page number:170"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "value = [6]\n",
+      "\n",
+      "for index in range(0,6):\n",
+      "    print \"Enter Integer\"\n",
+      "    value.append(int(input()))\n",
+      "for index in range(0,7):\n",
+      "    print \"Integer = \",value[index]"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "4\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "12\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "7\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "13\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Integer =  6\n",
+        "Integer =  4\n",
+        "Integer =  6\n",
+        "Integer =  12\n",
+        "Integer =  6\n",
+        "Integer =  7\n",
+        "Integer =  13\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.3.1, page number:170"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "value=[6,4,3,2,1]\n",
+      "for index in xrange(5):\n",
+      "    print \"Integer = \",value[index]"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Integer =  6\n",
+        "Integer =  4\n",
+        "Integer =  3\n",
+        "Integer =  2\n",
+        "Integer =  1\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.3.2, page number:171"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "def MAX_SIZE_CONST():\n",
+      "    return 123\n",
+      "def TRAILER_CONST():\n",
+      "    return -7777\n",
+      "value=array.array('i',[])\n",
+      "print \"Enter upto\",MAX_SIZE_CONST(),\"using\",TRAILER_CONST(),\"as trailer :\"\n",
+      "print \"\"\n",
+      "m=0\n",
+      "for index in range(0,int(MAX_SIZE_CONST())):\n",
+      "    item=int(input())\n",
+      "    if(item == int(TRAILER_CONST())):\n",
+      "        break\n",
+      "    else:\n",
+      "        value.append(item)\n",
+      "        m+=1\n",
+      "for index in range(0,m):\n",
+      "    print \"Integer =\",value[index]"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter upto 123 using -7777 as trailer :\n",
+        "\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "2\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "3\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "4\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "-7777\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Integer = 1\n",
+        "Integer = 2\n",
+        "Integer = 3\n",
+        "Integer = 4\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.4.1, page number:172"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "k=0\n",
+      "sum=0.0\n",
+      "def MAX_STUD():\n",
+      "    return 20\n",
+      "def ENDINP():\n",
+      "    return -9999\n",
+      "mark=array.array('i',(0 for i in range(0,MAX_STUD())))\n",
+      "print \"enter upto\",MAX_STUD(),\"marks:\"\n",
+      "readin=int(input())\n",
+      "for index in range(0,MAX_STUD()):\n",
+      "    if(readin != ENDINP()):\n",
+      "        mark[index]=readin\n",
+      "        readin=int(input())\n",
+      "        k+=1\n",
+      "for index in xrange(0,k):\n",
+      "    sum=sum+mark[index]\n",
+      "print \"Average Mark = \",sum/k\n",
+      "    "
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "enter upto 20 marks:\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "34\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "66\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "78\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "65\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "43\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "23\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "12\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "88\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "-9999\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Average Mark =  51.125\n"
+       ]
+      }
+     ],
+     "prompt_number": 4
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.5.1, page number:174"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "def MAX_SIZE():\n",
+      "    return 10\n",
+      "#str=array.array('i',(0 for i in range(0,MAX_SIZE()+1)))\n",
+      "print \"Enter the 10 letter word.\"\n",
+      "str=raw_input()\n",
+      "r=[]\n",
+      "for letter in str:\n",
+      "    r.append(letter)\n",
+      "r.reverse()\n",
+      "print \"word = \",str\n",
+      "print \"\".join(r)\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the 10 letter word.\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "madurai\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "word =  madurai\n",
+        "iarudam\n"
+       ]
+      }
+     ],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.6.1, page number:175"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "def MAX_SIZE():\n",
+      "    return 20\n",
+      "size=0\n",
+      "variable =array.array('i',[])\n",
+      "while True:\n",
+      "    print \"Array-size : ?\"\n",
+      "    size=int(input())\n",
+      "    if size>1 and size<MAX_SIZE():\n",
+      "        break\n",
+      "print \"Enter Numbers:\"\n",
+      "for k in range(0,size):\n",
+      "    m=int(input())\n",
+      "    variable.append(m)\n",
+      "\n",
+      "variable= array.array('i',sorted(variable))\n",
+      "\n",
+      "print \"Sorted Array is:\"\n",
+      "for k in range(0,size):\n",
+      "    print variable[k],\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Array-size : ?\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "9\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Numbers:\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "7\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "10\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "43\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "0\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "-5\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "14\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "8\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "9\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Sorted Array is:\n",
+        "-5 0 6 7 8 9 10 14 43\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.7.1,page number:176"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "pox =[[0 for x in range(4)]for x in range(6)]\n",
+      "pox[0]=3,5,7,9,12,20\n",
+      "pox[1]=10,13,17,21,25,40\n",
+      "pox[2]=15,18,22,26,30,45\n",
+      "pox[3]=17,20,23,27,32,46\n",
+      "\n",
+      "def read_city():\n",
+      "    running=True\n",
+      "    while running:\n",
+      "        print \"Which city?\"\n",
+      "        city=int(input())\n",
+      "        if city == 0:\n",
+      "            exit(1)\n",
+      "        if city<4 or city>4 :\n",
+      "            running=False\n",
+      "    return city\n",
+      "def read_year():\n",
+      "    running=True\n",
+      "    while running:\n",
+      "        print \"Which year?\"\n",
+      "        year=int(input())\n",
+      "        if year>1950 or year<2000 :\n",
+      "            running=False\n",
+      "    return year\n",
+      "def pop(x,y):\n",
+      "    global pox\n",
+      "    return pox[x-1][(y-1950)/10]\n",
+      "\n",
+      "def output_city():\n",
+      "    if city == 1:\n",
+      "        return \"Madurai\"\n",
+      "    elif city == 2:\n",
+      "        return \"Madras\"\n",
+      "    elif city == 3:\n",
+      "        return \"Bombay\"\n",
+      "    elif city == 4:\n",
+      "        return \"Calcutta\"\n",
+      "        \n",
+      "runnable=True\n",
+      "city=read_city()\n",
+      "while runnable :\n",
+      "    year=read_year()\n",
+      "    print \"Population in \",year,\"of\",output_city(),\"is\",pop(city,year),\"Lakhs\"\n",
+      "    city =read_city()\n",
+      "    if city == 0:\n",
+      "        runnable=False"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Which city?\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "3\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Which year?\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1990\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Population in  1990 of Bombay is 30 Lakhs\n",
+        "Which city?\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "0\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10_2.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10_2.ipynb
new file mode 100755
index 00000000..db2cb5a6
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10_2.ipynb
@@ -0,0 +1,711 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:a2d2127f6a5ebfde55eb11899a94f93b6aeee78155a32ab8e434ae8b263ad3b3"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "10 : ARRAYS"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.2.1,page number:170"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "value = [6]\n",
+      "\n",
+      "for index in range(0,6):\n",
+      "    print \"Enter Integer\"\n",
+      "    value.append(int(input()))\n",
+      "for index in range(0,7):\n",
+      "    print \"Integer = \",value[index]"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "4\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "12\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "7\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "13\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Integer =  6\n",
+        "Integer =  4\n",
+        "Integer =  6\n",
+        "Integer =  12\n",
+        "Integer =  6\n",
+        "Integer =  7\n",
+        "Integer =  13\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.3.1, page number:170"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "value=[6,4,3,2,1]\n",
+      "for index in xrange(5):\n",
+      "    print \"Integer = \",value[index]"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Integer =  6\n",
+        "Integer =  4\n",
+        "Integer =  3\n",
+        "Integer =  2\n",
+        "Integer =  1\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.3.2, page number:171"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "def MAX_SIZE_CONST():\n",
+      "    return 123\n",
+      "def TRAILER_CONST():\n",
+      "    return -7777\n",
+      "value=array.array('i',[])\n",
+      "print \"Enter upto\",MAX_SIZE_CONST(),\"using\",TRAILER_CONST(),\"as trailer :\"\n",
+      "print \"\"\n",
+      "m=0\n",
+      "for index in range(0,int(MAX_SIZE_CONST())):\n",
+      "    item=int(input())\n",
+      "    if(item == int(TRAILER_CONST())):\n",
+      "        break\n",
+      "    else:\n",
+      "        value.append(item)\n",
+      "        m+=1\n",
+      "for index in range(0,m):\n",
+      "    print \"Integer =\",value[index]"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter upto 123 using -7777 as trailer :\n",
+        "\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "2\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "3\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "4\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "-7777\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Integer = 1\n",
+        "Integer = 2\n",
+        "Integer = 3\n",
+        "Integer = 4\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.4.1, page number:172"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "k=0\n",
+      "sum=0.0\n",
+      "def MAX_STUD():\n",
+      "    return 20\n",
+      "def ENDINP():\n",
+      "    return -9999\n",
+      "mark=array.array('i',(0 for i in range(0,MAX_STUD())))\n",
+      "print \"enter upto\",MAX_STUD(),\"marks:\"\n",
+      "readin=int(input())\n",
+      "for index in range(0,MAX_STUD()):\n",
+      "    if(readin != ENDINP()):\n",
+      "        mark[index]=readin\n",
+      "        readin=int(input())\n",
+      "        k+=1\n",
+      "for index in xrange(0,k):\n",
+      "    sum=sum+mark[index]\n",
+      "print \"Average Mark = \",sum/k\n",
+      "    "
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "enter upto 20 marks:\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "34\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "66\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "78\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "65\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "43\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "23\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "12\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "88\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "-9999\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Average Mark =  51.125\n"
+       ]
+      }
+     ],
+     "prompt_number": 4
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.5.1, page number:174"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "def MAX_SIZE():\n",
+      "    return 10\n",
+      "#str=array.array('i',(0 for i in range(0,MAX_SIZE()+1)))\n",
+      "print \"Enter the 10 letter word.\"\n",
+      "str=raw_input()\n",
+      "r=[]\n",
+      "for letter in str:\n",
+      "    r.append(letter)\n",
+      "r.reverse()\n",
+      "print \"word = \",str\n",
+      "print \"\".join(r)\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the 10 letter word.\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "madurai\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "word =  madurai\n",
+        "iarudam\n"
+       ]
+      }
+     ],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.6.1, page number:175"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "def MAX_SIZE():\n",
+      "    return 20\n",
+      "size=0\n",
+      "variable =array.array('i',[])\n",
+      "while True:\n",
+      "    print \"Array-size : ?\"\n",
+      "    size=int(input())\n",
+      "    if size>1 and size<MAX_SIZE():\n",
+      "        break\n",
+      "print \"Enter Numbers:\"\n",
+      "for k in range(0,size):\n",
+      "    m=int(input())\n",
+      "    variable.append(m)\n",
+      "\n",
+      "variable= array.array('i',sorted(variable))\n",
+      "\n",
+      "print \"Sorted Array is:\"\n",
+      "for k in range(0,size):\n",
+      "    print variable[k],\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Array-size : ?\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "9\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Numbers:\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "7\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "10\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "43\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "0\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "-5\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "14\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "8\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "9\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Sorted Array is:\n",
+        "-5 0 6 7 8 9 10 14 43\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.7.1,page number:176"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "pox =[[0 for x in range(4)]for x in range(6)]\n",
+      "pox[0]=3,5,7,9,12,20\n",
+      "pox[1]=10,13,17,21,25,40\n",
+      "pox[2]=15,18,22,26,30,45\n",
+      "pox[3]=17,20,23,27,32,46\n",
+      "\n",
+      "def read_city():\n",
+      "    running=True\n",
+      "    while running:\n",
+      "        print \"Which city?\"\n",
+      "        city=int(input())\n",
+      "        if city == 0:\n",
+      "            exit(1)\n",
+      "        if city<4 or city>4 :\n",
+      "            running=False\n",
+      "    return city\n",
+      "def read_year():\n",
+      "    running=True\n",
+      "    while running:\n",
+      "        print \"Which year?\"\n",
+      "        year=int(input())\n",
+      "        if year>1950 or year<2000 :\n",
+      "            running=False\n",
+      "    return year\n",
+      "def pop(x,y):\n",
+      "    global pox\n",
+      "    return pox[x-1][(y-1950)/10]\n",
+      "\n",
+      "def output_city():\n",
+      "    if city == 1:\n",
+      "        return \"Madurai\"\n",
+      "    elif city == 2:\n",
+      "        return \"Madras\"\n",
+      "    elif city == 3:\n",
+      "        return \"Bombay\"\n",
+      "    elif city == 4:\n",
+      "        return \"Calcutta\"\n",
+      "        \n",
+      "runnable=True\n",
+      "city=read_city()\n",
+      "while runnable :\n",
+      "    year=read_year()\n",
+      "    print \"Population in \",year,\"of\",output_city(),\"is\",pop(city,year),\"Lakhs\"\n",
+      "    city =read_city()\n",
+      "    if city == 0:\n",
+      "        runnable=False"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Which city?\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "3\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Which year?\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1990\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Population in  1990 of Bombay is 30 Lakhs\n",
+        "Which city?\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "0\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10_3.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10_3.ipynb
new file mode 100755
index 00000000..db2cb5a6
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10_3.ipynb
@@ -0,0 +1,711 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:a2d2127f6a5ebfde55eb11899a94f93b6aeee78155a32ab8e434ae8b263ad3b3"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "10 : ARRAYS"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.2.1,page number:170"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "value = [6]\n",
+      "\n",
+      "for index in range(0,6):\n",
+      "    print \"Enter Integer\"\n",
+      "    value.append(int(input()))\n",
+      "for index in range(0,7):\n",
+      "    print \"Integer = \",value[index]"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "4\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "12\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "7\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "13\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Integer =  6\n",
+        "Integer =  4\n",
+        "Integer =  6\n",
+        "Integer =  12\n",
+        "Integer =  6\n",
+        "Integer =  7\n",
+        "Integer =  13\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.3.1, page number:170"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "value=[6,4,3,2,1]\n",
+      "for index in xrange(5):\n",
+      "    print \"Integer = \",value[index]"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Integer =  6\n",
+        "Integer =  4\n",
+        "Integer =  3\n",
+        "Integer =  2\n",
+        "Integer =  1\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.3.2, page number:171"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "def MAX_SIZE_CONST():\n",
+      "    return 123\n",
+      "def TRAILER_CONST():\n",
+      "    return -7777\n",
+      "value=array.array('i',[])\n",
+      "print \"Enter upto\",MAX_SIZE_CONST(),\"using\",TRAILER_CONST(),\"as trailer :\"\n",
+      "print \"\"\n",
+      "m=0\n",
+      "for index in range(0,int(MAX_SIZE_CONST())):\n",
+      "    item=int(input())\n",
+      "    if(item == int(TRAILER_CONST())):\n",
+      "        break\n",
+      "    else:\n",
+      "        value.append(item)\n",
+      "        m+=1\n",
+      "for index in range(0,m):\n",
+      "    print \"Integer =\",value[index]"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter upto 123 using -7777 as trailer :\n",
+        "\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "2\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "3\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "4\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "-7777\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Integer = 1\n",
+        "Integer = 2\n",
+        "Integer = 3\n",
+        "Integer = 4\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.4.1, page number:172"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "k=0\n",
+      "sum=0.0\n",
+      "def MAX_STUD():\n",
+      "    return 20\n",
+      "def ENDINP():\n",
+      "    return -9999\n",
+      "mark=array.array('i',(0 for i in range(0,MAX_STUD())))\n",
+      "print \"enter upto\",MAX_STUD(),\"marks:\"\n",
+      "readin=int(input())\n",
+      "for index in range(0,MAX_STUD()):\n",
+      "    if(readin != ENDINP()):\n",
+      "        mark[index]=readin\n",
+      "        readin=int(input())\n",
+      "        k+=1\n",
+      "for index in xrange(0,k):\n",
+      "    sum=sum+mark[index]\n",
+      "print \"Average Mark = \",sum/k\n",
+      "    "
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "enter upto 20 marks:\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "34\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "66\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "78\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "65\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "43\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "23\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "12\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "88\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "-9999\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Average Mark =  51.125\n"
+       ]
+      }
+     ],
+     "prompt_number": 4
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.5.1, page number:174"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "def MAX_SIZE():\n",
+      "    return 10\n",
+      "#str=array.array('i',(0 for i in range(0,MAX_SIZE()+1)))\n",
+      "print \"Enter the 10 letter word.\"\n",
+      "str=raw_input()\n",
+      "r=[]\n",
+      "for letter in str:\n",
+      "    r.append(letter)\n",
+      "r.reverse()\n",
+      "print \"word = \",str\n",
+      "print \"\".join(r)\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the 10 letter word.\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "madurai\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "word =  madurai\n",
+        "iarudam\n"
+       ]
+      }
+     ],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.6.1, page number:175"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "def MAX_SIZE():\n",
+      "    return 20\n",
+      "size=0\n",
+      "variable =array.array('i',[])\n",
+      "while True:\n",
+      "    print \"Array-size : ?\"\n",
+      "    size=int(input())\n",
+      "    if size>1 and size<MAX_SIZE():\n",
+      "        break\n",
+      "print \"Enter Numbers:\"\n",
+      "for k in range(0,size):\n",
+      "    m=int(input())\n",
+      "    variable.append(m)\n",
+      "\n",
+      "variable= array.array('i',sorted(variable))\n",
+      "\n",
+      "print \"Sorted Array is:\"\n",
+      "for k in range(0,size):\n",
+      "    print variable[k],\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Array-size : ?\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "9\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Numbers:\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "7\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "10\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "43\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "0\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "-5\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "14\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "8\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "9\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Sorted Array is:\n",
+        "-5 0 6 7 8 9 10 14 43\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.7.1,page number:176"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "pox =[[0 for x in range(4)]for x in range(6)]\n",
+      "pox[0]=3,5,7,9,12,20\n",
+      "pox[1]=10,13,17,21,25,40\n",
+      "pox[2]=15,18,22,26,30,45\n",
+      "pox[3]=17,20,23,27,32,46\n",
+      "\n",
+      "def read_city():\n",
+      "    running=True\n",
+      "    while running:\n",
+      "        print \"Which city?\"\n",
+      "        city=int(input())\n",
+      "        if city == 0:\n",
+      "            exit(1)\n",
+      "        if city<4 or city>4 :\n",
+      "            running=False\n",
+      "    return city\n",
+      "def read_year():\n",
+      "    running=True\n",
+      "    while running:\n",
+      "        print \"Which year?\"\n",
+      "        year=int(input())\n",
+      "        if year>1950 or year<2000 :\n",
+      "            running=False\n",
+      "    return year\n",
+      "def pop(x,y):\n",
+      "    global pox\n",
+      "    return pox[x-1][(y-1950)/10]\n",
+      "\n",
+      "def output_city():\n",
+      "    if city == 1:\n",
+      "        return \"Madurai\"\n",
+      "    elif city == 2:\n",
+      "        return \"Madras\"\n",
+      "    elif city == 3:\n",
+      "        return \"Bombay\"\n",
+      "    elif city == 4:\n",
+      "        return \"Calcutta\"\n",
+      "        \n",
+      "runnable=True\n",
+      "city=read_city()\n",
+      "while runnable :\n",
+      "    year=read_year()\n",
+      "    print \"Population in \",year,\"of\",output_city(),\"is\",pop(city,year),\"Lakhs\"\n",
+      "    city =read_city()\n",
+      "    if city == 0:\n",
+      "        runnable=False"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Which city?\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "3\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Which year?\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1990\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Population in  1990 of Bombay is 30 Lakhs\n",
+        "Which city?\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "0\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10_4.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10_4.ipynb
new file mode 100755
index 00000000..db2cb5a6
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10_4.ipynb
@@ -0,0 +1,711 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:a2d2127f6a5ebfde55eb11899a94f93b6aeee78155a32ab8e434ae8b263ad3b3"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "10 : ARRAYS"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.2.1,page number:170"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "value = [6]\n",
+      "\n",
+      "for index in range(0,6):\n",
+      "    print \"Enter Integer\"\n",
+      "    value.append(int(input()))\n",
+      "for index in range(0,7):\n",
+      "    print \"Integer = \",value[index]"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "4\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "12\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "7\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "13\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Integer =  6\n",
+        "Integer =  4\n",
+        "Integer =  6\n",
+        "Integer =  12\n",
+        "Integer =  6\n",
+        "Integer =  7\n",
+        "Integer =  13\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.3.1, page number:170"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "value=[6,4,3,2,1]\n",
+      "for index in xrange(5):\n",
+      "    print \"Integer = \",value[index]"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Integer =  6\n",
+        "Integer =  4\n",
+        "Integer =  3\n",
+        "Integer =  2\n",
+        "Integer =  1\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.3.2, page number:171"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "def MAX_SIZE_CONST():\n",
+      "    return 123\n",
+      "def TRAILER_CONST():\n",
+      "    return -7777\n",
+      "value=array.array('i',[])\n",
+      "print \"Enter upto\",MAX_SIZE_CONST(),\"using\",TRAILER_CONST(),\"as trailer :\"\n",
+      "print \"\"\n",
+      "m=0\n",
+      "for index in range(0,int(MAX_SIZE_CONST())):\n",
+      "    item=int(input())\n",
+      "    if(item == int(TRAILER_CONST())):\n",
+      "        break\n",
+      "    else:\n",
+      "        value.append(item)\n",
+      "        m+=1\n",
+      "for index in range(0,m):\n",
+      "    print \"Integer =\",value[index]"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter upto 123 using -7777 as trailer :\n",
+        "\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "2\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "3\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "4\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "-7777\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Integer = 1\n",
+        "Integer = 2\n",
+        "Integer = 3\n",
+        "Integer = 4\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.4.1, page number:172"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "k=0\n",
+      "sum=0.0\n",
+      "def MAX_STUD():\n",
+      "    return 20\n",
+      "def ENDINP():\n",
+      "    return -9999\n",
+      "mark=array.array('i',(0 for i in range(0,MAX_STUD())))\n",
+      "print \"enter upto\",MAX_STUD(),\"marks:\"\n",
+      "readin=int(input())\n",
+      "for index in range(0,MAX_STUD()):\n",
+      "    if(readin != ENDINP()):\n",
+      "        mark[index]=readin\n",
+      "        readin=int(input())\n",
+      "        k+=1\n",
+      "for index in xrange(0,k):\n",
+      "    sum=sum+mark[index]\n",
+      "print \"Average Mark = \",sum/k\n",
+      "    "
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "enter upto 20 marks:\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "34\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "66\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "78\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "65\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "43\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "23\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "12\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "88\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "-9999\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Average Mark =  51.125\n"
+       ]
+      }
+     ],
+     "prompt_number": 4
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.5.1, page number:174"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "def MAX_SIZE():\n",
+      "    return 10\n",
+      "#str=array.array('i',(0 for i in range(0,MAX_SIZE()+1)))\n",
+      "print \"Enter the 10 letter word.\"\n",
+      "str=raw_input()\n",
+      "r=[]\n",
+      "for letter in str:\n",
+      "    r.append(letter)\n",
+      "r.reverse()\n",
+      "print \"word = \",str\n",
+      "print \"\".join(r)\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the 10 letter word.\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "madurai\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "word =  madurai\n",
+        "iarudam\n"
+       ]
+      }
+     ],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.6.1, page number:175"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "def MAX_SIZE():\n",
+      "    return 20\n",
+      "size=0\n",
+      "variable =array.array('i',[])\n",
+      "while True:\n",
+      "    print \"Array-size : ?\"\n",
+      "    size=int(input())\n",
+      "    if size>1 and size<MAX_SIZE():\n",
+      "        break\n",
+      "print \"Enter Numbers:\"\n",
+      "for k in range(0,size):\n",
+      "    m=int(input())\n",
+      "    variable.append(m)\n",
+      "\n",
+      "variable= array.array('i',sorted(variable))\n",
+      "\n",
+      "print \"Sorted Array is:\"\n",
+      "for k in range(0,size):\n",
+      "    print variable[k],\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Array-size : ?\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "9\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Numbers:\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "7\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "10\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "43\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "0\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "-5\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "14\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "8\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "9\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Sorted Array is:\n",
+        "-5 0 6 7 8 9 10 14 43\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.7.1,page number:176"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "pox =[[0 for x in range(4)]for x in range(6)]\n",
+      "pox[0]=3,5,7,9,12,20\n",
+      "pox[1]=10,13,17,21,25,40\n",
+      "pox[2]=15,18,22,26,30,45\n",
+      "pox[3]=17,20,23,27,32,46\n",
+      "\n",
+      "def read_city():\n",
+      "    running=True\n",
+      "    while running:\n",
+      "        print \"Which city?\"\n",
+      "        city=int(input())\n",
+      "        if city == 0:\n",
+      "            exit(1)\n",
+      "        if city<4 or city>4 :\n",
+      "            running=False\n",
+      "    return city\n",
+      "def read_year():\n",
+      "    running=True\n",
+      "    while running:\n",
+      "        print \"Which year?\"\n",
+      "        year=int(input())\n",
+      "        if year>1950 or year<2000 :\n",
+      "            running=False\n",
+      "    return year\n",
+      "def pop(x,y):\n",
+      "    global pox\n",
+      "    return pox[x-1][(y-1950)/10]\n",
+      "\n",
+      "def output_city():\n",
+      "    if city == 1:\n",
+      "        return \"Madurai\"\n",
+      "    elif city == 2:\n",
+      "        return \"Madras\"\n",
+      "    elif city == 3:\n",
+      "        return \"Bombay\"\n",
+      "    elif city == 4:\n",
+      "        return \"Calcutta\"\n",
+      "        \n",
+      "runnable=True\n",
+      "city=read_city()\n",
+      "while runnable :\n",
+      "    year=read_year()\n",
+      "    print \"Population in \",year,\"of\",output_city(),\"is\",pop(city,year),\"Lakhs\"\n",
+      "    city =read_city()\n",
+      "    if city == 0:\n",
+      "        runnable=False"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Which city?\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "3\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Which year?\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1990\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Population in  1990 of Bombay is 30 Lakhs\n",
+        "Which city?\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "0\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10_5.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10_5.ipynb
new file mode 100755
index 00000000..db2cb5a6
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10_5.ipynb
@@ -0,0 +1,711 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:a2d2127f6a5ebfde55eb11899a94f93b6aeee78155a32ab8e434ae8b263ad3b3"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "10 : ARRAYS"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.2.1,page number:170"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "value = [6]\n",
+      "\n",
+      "for index in range(0,6):\n",
+      "    print \"Enter Integer\"\n",
+      "    value.append(int(input()))\n",
+      "for index in range(0,7):\n",
+      "    print \"Integer = \",value[index]"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "4\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "12\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "7\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "13\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Integer =  6\n",
+        "Integer =  4\n",
+        "Integer =  6\n",
+        "Integer =  12\n",
+        "Integer =  6\n",
+        "Integer =  7\n",
+        "Integer =  13\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.3.1, page number:170"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "value=[6,4,3,2,1]\n",
+      "for index in xrange(5):\n",
+      "    print \"Integer = \",value[index]"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Integer =  6\n",
+        "Integer =  4\n",
+        "Integer =  3\n",
+        "Integer =  2\n",
+        "Integer =  1\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.3.2, page number:171"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "def MAX_SIZE_CONST():\n",
+      "    return 123\n",
+      "def TRAILER_CONST():\n",
+      "    return -7777\n",
+      "value=array.array('i',[])\n",
+      "print \"Enter upto\",MAX_SIZE_CONST(),\"using\",TRAILER_CONST(),\"as trailer :\"\n",
+      "print \"\"\n",
+      "m=0\n",
+      "for index in range(0,int(MAX_SIZE_CONST())):\n",
+      "    item=int(input())\n",
+      "    if(item == int(TRAILER_CONST())):\n",
+      "        break\n",
+      "    else:\n",
+      "        value.append(item)\n",
+      "        m+=1\n",
+      "for index in range(0,m):\n",
+      "    print \"Integer =\",value[index]"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter upto 123 using -7777 as trailer :\n",
+        "\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "2\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "3\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "4\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "-7777\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Integer = 1\n",
+        "Integer = 2\n",
+        "Integer = 3\n",
+        "Integer = 4\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.4.1, page number:172"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "k=0\n",
+      "sum=0.0\n",
+      "def MAX_STUD():\n",
+      "    return 20\n",
+      "def ENDINP():\n",
+      "    return -9999\n",
+      "mark=array.array('i',(0 for i in range(0,MAX_STUD())))\n",
+      "print \"enter upto\",MAX_STUD(),\"marks:\"\n",
+      "readin=int(input())\n",
+      "for index in range(0,MAX_STUD()):\n",
+      "    if(readin != ENDINP()):\n",
+      "        mark[index]=readin\n",
+      "        readin=int(input())\n",
+      "        k+=1\n",
+      "for index in xrange(0,k):\n",
+      "    sum=sum+mark[index]\n",
+      "print \"Average Mark = \",sum/k\n",
+      "    "
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "enter upto 20 marks:\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "34\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "66\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "78\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "65\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "43\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "23\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "12\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "88\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "-9999\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Average Mark =  51.125\n"
+       ]
+      }
+     ],
+     "prompt_number": 4
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.5.1, page number:174"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "def MAX_SIZE():\n",
+      "    return 10\n",
+      "#str=array.array('i',(0 for i in range(0,MAX_SIZE()+1)))\n",
+      "print \"Enter the 10 letter word.\"\n",
+      "str=raw_input()\n",
+      "r=[]\n",
+      "for letter in str:\n",
+      "    r.append(letter)\n",
+      "r.reverse()\n",
+      "print \"word = \",str\n",
+      "print \"\".join(r)\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the 10 letter word.\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "madurai\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "word =  madurai\n",
+        "iarudam\n"
+       ]
+      }
+     ],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.6.1, page number:175"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "def MAX_SIZE():\n",
+      "    return 20\n",
+      "size=0\n",
+      "variable =array.array('i',[])\n",
+      "while True:\n",
+      "    print \"Array-size : ?\"\n",
+      "    size=int(input())\n",
+      "    if size>1 and size<MAX_SIZE():\n",
+      "        break\n",
+      "print \"Enter Numbers:\"\n",
+      "for k in range(0,size):\n",
+      "    m=int(input())\n",
+      "    variable.append(m)\n",
+      "\n",
+      "variable= array.array('i',sorted(variable))\n",
+      "\n",
+      "print \"Sorted Array is:\"\n",
+      "for k in range(0,size):\n",
+      "    print variable[k],\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Array-size : ?\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "9\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Numbers:\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "7\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "10\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "43\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "0\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "-5\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "14\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "8\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "9\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Sorted Array is:\n",
+        "-5 0 6 7 8 9 10 14 43\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.7.1,page number:176"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "pox =[[0 for x in range(4)]for x in range(6)]\n",
+      "pox[0]=3,5,7,9,12,20\n",
+      "pox[1]=10,13,17,21,25,40\n",
+      "pox[2]=15,18,22,26,30,45\n",
+      "pox[3]=17,20,23,27,32,46\n",
+      "\n",
+      "def read_city():\n",
+      "    running=True\n",
+      "    while running:\n",
+      "        print \"Which city?\"\n",
+      "        city=int(input())\n",
+      "        if city == 0:\n",
+      "            exit(1)\n",
+      "        if city<4 or city>4 :\n",
+      "            running=False\n",
+      "    return city\n",
+      "def read_year():\n",
+      "    running=True\n",
+      "    while running:\n",
+      "        print \"Which year?\"\n",
+      "        year=int(input())\n",
+      "        if year>1950 or year<2000 :\n",
+      "            running=False\n",
+      "    return year\n",
+      "def pop(x,y):\n",
+      "    global pox\n",
+      "    return pox[x-1][(y-1950)/10]\n",
+      "\n",
+      "def output_city():\n",
+      "    if city == 1:\n",
+      "        return \"Madurai\"\n",
+      "    elif city == 2:\n",
+      "        return \"Madras\"\n",
+      "    elif city == 3:\n",
+      "        return \"Bombay\"\n",
+      "    elif city == 4:\n",
+      "        return \"Calcutta\"\n",
+      "        \n",
+      "runnable=True\n",
+      "city=read_city()\n",
+      "while runnable :\n",
+      "    year=read_year()\n",
+      "    print \"Population in \",year,\"of\",output_city(),\"is\",pop(city,year),\"Lakhs\"\n",
+      "    city =read_city()\n",
+      "    if city == 0:\n",
+      "        runnable=False"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Which city?\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "3\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Which year?\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1990\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Population in  1990 of Bombay is 30 Lakhs\n",
+        "Which city?\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "0\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10_6.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10_6.ipynb
new file mode 100755
index 00000000..db2cb5a6
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10_6.ipynb
@@ -0,0 +1,711 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:a2d2127f6a5ebfde55eb11899a94f93b6aeee78155a32ab8e434ae8b263ad3b3"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "10 : ARRAYS"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.2.1,page number:170"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "value = [6]\n",
+      "\n",
+      "for index in range(0,6):\n",
+      "    print \"Enter Integer\"\n",
+      "    value.append(int(input()))\n",
+      "for index in range(0,7):\n",
+      "    print \"Integer = \",value[index]"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "4\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "12\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "7\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "13\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Integer =  6\n",
+        "Integer =  4\n",
+        "Integer =  6\n",
+        "Integer =  12\n",
+        "Integer =  6\n",
+        "Integer =  7\n",
+        "Integer =  13\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.3.1, page number:170"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "value=[6,4,3,2,1]\n",
+      "for index in xrange(5):\n",
+      "    print \"Integer = \",value[index]"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Integer =  6\n",
+        "Integer =  4\n",
+        "Integer =  3\n",
+        "Integer =  2\n",
+        "Integer =  1\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.3.2, page number:171"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "def MAX_SIZE_CONST():\n",
+      "    return 123\n",
+      "def TRAILER_CONST():\n",
+      "    return -7777\n",
+      "value=array.array('i',[])\n",
+      "print \"Enter upto\",MAX_SIZE_CONST(),\"using\",TRAILER_CONST(),\"as trailer :\"\n",
+      "print \"\"\n",
+      "m=0\n",
+      "for index in range(0,int(MAX_SIZE_CONST())):\n",
+      "    item=int(input())\n",
+      "    if(item == int(TRAILER_CONST())):\n",
+      "        break\n",
+      "    else:\n",
+      "        value.append(item)\n",
+      "        m+=1\n",
+      "for index in range(0,m):\n",
+      "    print \"Integer =\",value[index]"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter upto 123 using -7777 as trailer :\n",
+        "\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "2\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "3\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "4\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "-7777\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Integer = 1\n",
+        "Integer = 2\n",
+        "Integer = 3\n",
+        "Integer = 4\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.4.1, page number:172"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "k=0\n",
+      "sum=0.0\n",
+      "def MAX_STUD():\n",
+      "    return 20\n",
+      "def ENDINP():\n",
+      "    return -9999\n",
+      "mark=array.array('i',(0 for i in range(0,MAX_STUD())))\n",
+      "print \"enter upto\",MAX_STUD(),\"marks:\"\n",
+      "readin=int(input())\n",
+      "for index in range(0,MAX_STUD()):\n",
+      "    if(readin != ENDINP()):\n",
+      "        mark[index]=readin\n",
+      "        readin=int(input())\n",
+      "        k+=1\n",
+      "for index in xrange(0,k):\n",
+      "    sum=sum+mark[index]\n",
+      "print \"Average Mark = \",sum/k\n",
+      "    "
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "enter upto 20 marks:\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "34\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "66\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "78\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "65\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "43\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "23\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "12\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "88\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "-9999\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Average Mark =  51.125\n"
+       ]
+      }
+     ],
+     "prompt_number": 4
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.5.1, page number:174"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "def MAX_SIZE():\n",
+      "    return 10\n",
+      "#str=array.array('i',(0 for i in range(0,MAX_SIZE()+1)))\n",
+      "print \"Enter the 10 letter word.\"\n",
+      "str=raw_input()\n",
+      "r=[]\n",
+      "for letter in str:\n",
+      "    r.append(letter)\n",
+      "r.reverse()\n",
+      "print \"word = \",str\n",
+      "print \"\".join(r)\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the 10 letter word.\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "madurai\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "word =  madurai\n",
+        "iarudam\n"
+       ]
+      }
+     ],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.6.1, page number:175"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "def MAX_SIZE():\n",
+      "    return 20\n",
+      "size=0\n",
+      "variable =array.array('i',[])\n",
+      "while True:\n",
+      "    print \"Array-size : ?\"\n",
+      "    size=int(input())\n",
+      "    if size>1 and size<MAX_SIZE():\n",
+      "        break\n",
+      "print \"Enter Numbers:\"\n",
+      "for k in range(0,size):\n",
+      "    m=int(input())\n",
+      "    variable.append(m)\n",
+      "\n",
+      "variable= array.array('i',sorted(variable))\n",
+      "\n",
+      "print \"Sorted Array is:\"\n",
+      "for k in range(0,size):\n",
+      "    print variable[k],\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Array-size : ?\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "9\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Numbers:\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "7\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "10\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "43\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "0\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "-5\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "14\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "8\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "9\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Sorted Array is:\n",
+        "-5 0 6 7 8 9 10 14 43\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.7.1,page number:176"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "pox =[[0 for x in range(4)]for x in range(6)]\n",
+      "pox[0]=3,5,7,9,12,20\n",
+      "pox[1]=10,13,17,21,25,40\n",
+      "pox[2]=15,18,22,26,30,45\n",
+      "pox[3]=17,20,23,27,32,46\n",
+      "\n",
+      "def read_city():\n",
+      "    running=True\n",
+      "    while running:\n",
+      "        print \"Which city?\"\n",
+      "        city=int(input())\n",
+      "        if city == 0:\n",
+      "            exit(1)\n",
+      "        if city<4 or city>4 :\n",
+      "            running=False\n",
+      "    return city\n",
+      "def read_year():\n",
+      "    running=True\n",
+      "    while running:\n",
+      "        print \"Which year?\"\n",
+      "        year=int(input())\n",
+      "        if year>1950 or year<2000 :\n",
+      "            running=False\n",
+      "    return year\n",
+      "def pop(x,y):\n",
+      "    global pox\n",
+      "    return pox[x-1][(y-1950)/10]\n",
+      "\n",
+      "def output_city():\n",
+      "    if city == 1:\n",
+      "        return \"Madurai\"\n",
+      "    elif city == 2:\n",
+      "        return \"Madras\"\n",
+      "    elif city == 3:\n",
+      "        return \"Bombay\"\n",
+      "    elif city == 4:\n",
+      "        return \"Calcutta\"\n",
+      "        \n",
+      "runnable=True\n",
+      "city=read_city()\n",
+      "while runnable :\n",
+      "    year=read_year()\n",
+      "    print \"Population in \",year,\"of\",output_city(),\"is\",pop(city,year),\"Lakhs\"\n",
+      "    city =read_city()\n",
+      "    if city == 0:\n",
+      "        runnable=False"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Which city?\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "3\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Which year?\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1990\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Population in  1990 of Bombay is 30 Lakhs\n",
+        "Which city?\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "0\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10_7.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10_7.ipynb
new file mode 100755
index 00000000..db2cb5a6
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10_7.ipynb
@@ -0,0 +1,711 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:a2d2127f6a5ebfde55eb11899a94f93b6aeee78155a32ab8e434ae8b263ad3b3"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "10 : ARRAYS"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.2.1,page number:170"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "value = [6]\n",
+      "\n",
+      "for index in range(0,6):\n",
+      "    print \"Enter Integer\"\n",
+      "    value.append(int(input()))\n",
+      "for index in range(0,7):\n",
+      "    print \"Integer = \",value[index]"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "4\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "12\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "7\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "13\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Integer =  6\n",
+        "Integer =  4\n",
+        "Integer =  6\n",
+        "Integer =  12\n",
+        "Integer =  6\n",
+        "Integer =  7\n",
+        "Integer =  13\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.3.1, page number:170"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "value=[6,4,3,2,1]\n",
+      "for index in xrange(5):\n",
+      "    print \"Integer = \",value[index]"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Integer =  6\n",
+        "Integer =  4\n",
+        "Integer =  3\n",
+        "Integer =  2\n",
+        "Integer =  1\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.3.2, page number:171"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "def MAX_SIZE_CONST():\n",
+      "    return 123\n",
+      "def TRAILER_CONST():\n",
+      "    return -7777\n",
+      "value=array.array('i',[])\n",
+      "print \"Enter upto\",MAX_SIZE_CONST(),\"using\",TRAILER_CONST(),\"as trailer :\"\n",
+      "print \"\"\n",
+      "m=0\n",
+      "for index in range(0,int(MAX_SIZE_CONST())):\n",
+      "    item=int(input())\n",
+      "    if(item == int(TRAILER_CONST())):\n",
+      "        break\n",
+      "    else:\n",
+      "        value.append(item)\n",
+      "        m+=1\n",
+      "for index in range(0,m):\n",
+      "    print \"Integer =\",value[index]"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter upto 123 using -7777 as trailer :\n",
+        "\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "2\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "3\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "4\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "-7777\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Integer = 1\n",
+        "Integer = 2\n",
+        "Integer = 3\n",
+        "Integer = 4\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.4.1, page number:172"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "k=0\n",
+      "sum=0.0\n",
+      "def MAX_STUD():\n",
+      "    return 20\n",
+      "def ENDINP():\n",
+      "    return -9999\n",
+      "mark=array.array('i',(0 for i in range(0,MAX_STUD())))\n",
+      "print \"enter upto\",MAX_STUD(),\"marks:\"\n",
+      "readin=int(input())\n",
+      "for index in range(0,MAX_STUD()):\n",
+      "    if(readin != ENDINP()):\n",
+      "        mark[index]=readin\n",
+      "        readin=int(input())\n",
+      "        k+=1\n",
+      "for index in xrange(0,k):\n",
+      "    sum=sum+mark[index]\n",
+      "print \"Average Mark = \",sum/k\n",
+      "    "
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "enter upto 20 marks:\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "34\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "66\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "78\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "65\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "43\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "23\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "12\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "88\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "-9999\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Average Mark =  51.125\n"
+       ]
+      }
+     ],
+     "prompt_number": 4
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.5.1, page number:174"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "def MAX_SIZE():\n",
+      "    return 10\n",
+      "#str=array.array('i',(0 for i in range(0,MAX_SIZE()+1)))\n",
+      "print \"Enter the 10 letter word.\"\n",
+      "str=raw_input()\n",
+      "r=[]\n",
+      "for letter in str:\n",
+      "    r.append(letter)\n",
+      "r.reverse()\n",
+      "print \"word = \",str\n",
+      "print \"\".join(r)\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the 10 letter word.\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "madurai\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "word =  madurai\n",
+        "iarudam\n"
+       ]
+      }
+     ],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.6.1, page number:175"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "def MAX_SIZE():\n",
+      "    return 20\n",
+      "size=0\n",
+      "variable =array.array('i',[])\n",
+      "while True:\n",
+      "    print \"Array-size : ?\"\n",
+      "    size=int(input())\n",
+      "    if size>1 and size<MAX_SIZE():\n",
+      "        break\n",
+      "print \"Enter Numbers:\"\n",
+      "for k in range(0,size):\n",
+      "    m=int(input())\n",
+      "    variable.append(m)\n",
+      "\n",
+      "variable= array.array('i',sorted(variable))\n",
+      "\n",
+      "print \"Sorted Array is:\"\n",
+      "for k in range(0,size):\n",
+      "    print variable[k],\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Array-size : ?\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "9\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Numbers:\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "7\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "10\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "43\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "0\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "-5\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "14\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "8\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "9\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Sorted Array is:\n",
+        "-5 0 6 7 8 9 10 14 43\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.7.1,page number:176"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "pox =[[0 for x in range(4)]for x in range(6)]\n",
+      "pox[0]=3,5,7,9,12,20\n",
+      "pox[1]=10,13,17,21,25,40\n",
+      "pox[2]=15,18,22,26,30,45\n",
+      "pox[3]=17,20,23,27,32,46\n",
+      "\n",
+      "def read_city():\n",
+      "    running=True\n",
+      "    while running:\n",
+      "        print \"Which city?\"\n",
+      "        city=int(input())\n",
+      "        if city == 0:\n",
+      "            exit(1)\n",
+      "        if city<4 or city>4 :\n",
+      "            running=False\n",
+      "    return city\n",
+      "def read_year():\n",
+      "    running=True\n",
+      "    while running:\n",
+      "        print \"Which year?\"\n",
+      "        year=int(input())\n",
+      "        if year>1950 or year<2000 :\n",
+      "            running=False\n",
+      "    return year\n",
+      "def pop(x,y):\n",
+      "    global pox\n",
+      "    return pox[x-1][(y-1950)/10]\n",
+      "\n",
+      "def output_city():\n",
+      "    if city == 1:\n",
+      "        return \"Madurai\"\n",
+      "    elif city == 2:\n",
+      "        return \"Madras\"\n",
+      "    elif city == 3:\n",
+      "        return \"Bombay\"\n",
+      "    elif city == 4:\n",
+      "        return \"Calcutta\"\n",
+      "        \n",
+      "runnable=True\n",
+      "city=read_city()\n",
+      "while runnable :\n",
+      "    year=read_year()\n",
+      "    print \"Population in \",year,\"of\",output_city(),\"is\",pop(city,year),\"Lakhs\"\n",
+      "    city =read_city()\n",
+      "    if city == 0:\n",
+      "        runnable=False"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Which city?\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "3\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Which year?\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1990\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Population in  1990 of Bombay is 30 Lakhs\n",
+        "Which city?\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "0\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10_8.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10_8.ipynb
new file mode 100755
index 00000000..db2cb5a6
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10_8.ipynb
@@ -0,0 +1,711 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:a2d2127f6a5ebfde55eb11899a94f93b6aeee78155a32ab8e434ae8b263ad3b3"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "10 : ARRAYS"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.2.1,page number:170"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "value = [6]\n",
+      "\n",
+      "for index in range(0,6):\n",
+      "    print \"Enter Integer\"\n",
+      "    value.append(int(input()))\n",
+      "for index in range(0,7):\n",
+      "    print \"Integer = \",value[index]"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "4\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "12\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "7\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "13\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Integer =  6\n",
+        "Integer =  4\n",
+        "Integer =  6\n",
+        "Integer =  12\n",
+        "Integer =  6\n",
+        "Integer =  7\n",
+        "Integer =  13\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.3.1, page number:170"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "value=[6,4,3,2,1]\n",
+      "for index in xrange(5):\n",
+      "    print \"Integer = \",value[index]"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Integer =  6\n",
+        "Integer =  4\n",
+        "Integer =  3\n",
+        "Integer =  2\n",
+        "Integer =  1\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.3.2, page number:171"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "def MAX_SIZE_CONST():\n",
+      "    return 123\n",
+      "def TRAILER_CONST():\n",
+      "    return -7777\n",
+      "value=array.array('i',[])\n",
+      "print \"Enter upto\",MAX_SIZE_CONST(),\"using\",TRAILER_CONST(),\"as trailer :\"\n",
+      "print \"\"\n",
+      "m=0\n",
+      "for index in range(0,int(MAX_SIZE_CONST())):\n",
+      "    item=int(input())\n",
+      "    if(item == int(TRAILER_CONST())):\n",
+      "        break\n",
+      "    else:\n",
+      "        value.append(item)\n",
+      "        m+=1\n",
+      "for index in range(0,m):\n",
+      "    print \"Integer =\",value[index]"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter upto 123 using -7777 as trailer :\n",
+        "\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "2\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "3\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "4\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "-7777\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Integer = 1\n",
+        "Integer = 2\n",
+        "Integer = 3\n",
+        "Integer = 4\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.4.1, page number:172"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "k=0\n",
+      "sum=0.0\n",
+      "def MAX_STUD():\n",
+      "    return 20\n",
+      "def ENDINP():\n",
+      "    return -9999\n",
+      "mark=array.array('i',(0 for i in range(0,MAX_STUD())))\n",
+      "print \"enter upto\",MAX_STUD(),\"marks:\"\n",
+      "readin=int(input())\n",
+      "for index in range(0,MAX_STUD()):\n",
+      "    if(readin != ENDINP()):\n",
+      "        mark[index]=readin\n",
+      "        readin=int(input())\n",
+      "        k+=1\n",
+      "for index in xrange(0,k):\n",
+      "    sum=sum+mark[index]\n",
+      "print \"Average Mark = \",sum/k\n",
+      "    "
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "enter upto 20 marks:\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "34\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "66\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "78\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "65\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "43\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "23\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "12\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "88\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "-9999\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Average Mark =  51.125\n"
+       ]
+      }
+     ],
+     "prompt_number": 4
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.5.1, page number:174"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "def MAX_SIZE():\n",
+      "    return 10\n",
+      "#str=array.array('i',(0 for i in range(0,MAX_SIZE()+1)))\n",
+      "print \"Enter the 10 letter word.\"\n",
+      "str=raw_input()\n",
+      "r=[]\n",
+      "for letter in str:\n",
+      "    r.append(letter)\n",
+      "r.reverse()\n",
+      "print \"word = \",str\n",
+      "print \"\".join(r)\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the 10 letter word.\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "madurai\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "word =  madurai\n",
+        "iarudam\n"
+       ]
+      }
+     ],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.6.1, page number:175"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "def MAX_SIZE():\n",
+      "    return 20\n",
+      "size=0\n",
+      "variable =array.array('i',[])\n",
+      "while True:\n",
+      "    print \"Array-size : ?\"\n",
+      "    size=int(input())\n",
+      "    if size>1 and size<MAX_SIZE():\n",
+      "        break\n",
+      "print \"Enter Numbers:\"\n",
+      "for k in range(0,size):\n",
+      "    m=int(input())\n",
+      "    variable.append(m)\n",
+      "\n",
+      "variable= array.array('i',sorted(variable))\n",
+      "\n",
+      "print \"Sorted Array is:\"\n",
+      "for k in range(0,size):\n",
+      "    print variable[k],\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Array-size : ?\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "9\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Numbers:\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "7\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "10\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "43\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "0\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "-5\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "14\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "8\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "9\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Sorted Array is:\n",
+        "-5 0 6 7 8 9 10 14 43\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.7.1,page number:176"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "pox =[[0 for x in range(4)]for x in range(6)]\n",
+      "pox[0]=3,5,7,9,12,20\n",
+      "pox[1]=10,13,17,21,25,40\n",
+      "pox[2]=15,18,22,26,30,45\n",
+      "pox[3]=17,20,23,27,32,46\n",
+      "\n",
+      "def read_city():\n",
+      "    running=True\n",
+      "    while running:\n",
+      "        print \"Which city?\"\n",
+      "        city=int(input())\n",
+      "        if city == 0:\n",
+      "            exit(1)\n",
+      "        if city<4 or city>4 :\n",
+      "            running=False\n",
+      "    return city\n",
+      "def read_year():\n",
+      "    running=True\n",
+      "    while running:\n",
+      "        print \"Which year?\"\n",
+      "        year=int(input())\n",
+      "        if year>1950 or year<2000 :\n",
+      "            running=False\n",
+      "    return year\n",
+      "def pop(x,y):\n",
+      "    global pox\n",
+      "    return pox[x-1][(y-1950)/10]\n",
+      "\n",
+      "def output_city():\n",
+      "    if city == 1:\n",
+      "        return \"Madurai\"\n",
+      "    elif city == 2:\n",
+      "        return \"Madras\"\n",
+      "    elif city == 3:\n",
+      "        return \"Bombay\"\n",
+      "    elif city == 4:\n",
+      "        return \"Calcutta\"\n",
+      "        \n",
+      "runnable=True\n",
+      "city=read_city()\n",
+      "while runnable :\n",
+      "    year=read_year()\n",
+      "    print \"Population in \",year,\"of\",output_city(),\"is\",pop(city,year),\"Lakhs\"\n",
+      "    city =read_city()\n",
+      "    if city == 0:\n",
+      "        runnable=False"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Which city?\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "3\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Which year?\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1990\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Population in  1990 of Bombay is 30 Lakhs\n",
+        "Which city?\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "0\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10_9.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10_9.ipynb
new file mode 100755
index 00000000..db2cb5a6
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10_9.ipynb
@@ -0,0 +1,711 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:a2d2127f6a5ebfde55eb11899a94f93b6aeee78155a32ab8e434ae8b263ad3b3"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "10 : ARRAYS"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.2.1,page number:170"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "value = [6]\n",
+      "\n",
+      "for index in range(0,6):\n",
+      "    print \"Enter Integer\"\n",
+      "    value.append(int(input()))\n",
+      "for index in range(0,7):\n",
+      "    print \"Integer = \",value[index]"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "4\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "12\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "7\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "13\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Integer =  6\n",
+        "Integer =  4\n",
+        "Integer =  6\n",
+        "Integer =  12\n",
+        "Integer =  6\n",
+        "Integer =  7\n",
+        "Integer =  13\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.3.1, page number:170"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "value=[6,4,3,2,1]\n",
+      "for index in xrange(5):\n",
+      "    print \"Integer = \",value[index]"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Integer =  6\n",
+        "Integer =  4\n",
+        "Integer =  3\n",
+        "Integer =  2\n",
+        "Integer =  1\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.3.2, page number:171"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "def MAX_SIZE_CONST():\n",
+      "    return 123\n",
+      "def TRAILER_CONST():\n",
+      "    return -7777\n",
+      "value=array.array('i',[])\n",
+      "print \"Enter upto\",MAX_SIZE_CONST(),\"using\",TRAILER_CONST(),\"as trailer :\"\n",
+      "print \"\"\n",
+      "m=0\n",
+      "for index in range(0,int(MAX_SIZE_CONST())):\n",
+      "    item=int(input())\n",
+      "    if(item == int(TRAILER_CONST())):\n",
+      "        break\n",
+      "    else:\n",
+      "        value.append(item)\n",
+      "        m+=1\n",
+      "for index in range(0,m):\n",
+      "    print \"Integer =\",value[index]"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter upto 123 using -7777 as trailer :\n",
+        "\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "2\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "3\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "4\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "-7777\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Integer = 1\n",
+        "Integer = 2\n",
+        "Integer = 3\n",
+        "Integer = 4\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.4.1, page number:172"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "k=0\n",
+      "sum=0.0\n",
+      "def MAX_STUD():\n",
+      "    return 20\n",
+      "def ENDINP():\n",
+      "    return -9999\n",
+      "mark=array.array('i',(0 for i in range(0,MAX_STUD())))\n",
+      "print \"enter upto\",MAX_STUD(),\"marks:\"\n",
+      "readin=int(input())\n",
+      "for index in range(0,MAX_STUD()):\n",
+      "    if(readin != ENDINP()):\n",
+      "        mark[index]=readin\n",
+      "        readin=int(input())\n",
+      "        k+=1\n",
+      "for index in xrange(0,k):\n",
+      "    sum=sum+mark[index]\n",
+      "print \"Average Mark = \",sum/k\n",
+      "    "
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "enter upto 20 marks:\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "34\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "66\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "78\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "65\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "43\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "23\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "12\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "88\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "-9999\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Average Mark =  51.125\n"
+       ]
+      }
+     ],
+     "prompt_number": 4
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.5.1, page number:174"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "def MAX_SIZE():\n",
+      "    return 10\n",
+      "#str=array.array('i',(0 for i in range(0,MAX_SIZE()+1)))\n",
+      "print \"Enter the 10 letter word.\"\n",
+      "str=raw_input()\n",
+      "r=[]\n",
+      "for letter in str:\n",
+      "    r.append(letter)\n",
+      "r.reverse()\n",
+      "print \"word = \",str\n",
+      "print \"\".join(r)\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the 10 letter word.\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "madurai\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "word =  madurai\n",
+        "iarudam\n"
+       ]
+      }
+     ],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.6.1, page number:175"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "def MAX_SIZE():\n",
+      "    return 20\n",
+      "size=0\n",
+      "variable =array.array('i',[])\n",
+      "while True:\n",
+      "    print \"Array-size : ?\"\n",
+      "    size=int(input())\n",
+      "    if size>1 and size<MAX_SIZE():\n",
+      "        break\n",
+      "print \"Enter Numbers:\"\n",
+      "for k in range(0,size):\n",
+      "    m=int(input())\n",
+      "    variable.append(m)\n",
+      "\n",
+      "variable= array.array('i',sorted(variable))\n",
+      "\n",
+      "print \"Sorted Array is:\"\n",
+      "for k in range(0,size):\n",
+      "    print variable[k],\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Array-size : ?\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "9\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Numbers:\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "7\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "10\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "43\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "0\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "-5\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "14\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "8\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "9\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Sorted Array is:\n",
+        "-5 0 6 7 8 9 10 14 43\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "10.7.1,page number:176"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "pox =[[0 for x in range(4)]for x in range(6)]\n",
+      "pox[0]=3,5,7,9,12,20\n",
+      "pox[1]=10,13,17,21,25,40\n",
+      "pox[2]=15,18,22,26,30,45\n",
+      "pox[3]=17,20,23,27,32,46\n",
+      "\n",
+      "def read_city():\n",
+      "    running=True\n",
+      "    while running:\n",
+      "        print \"Which city?\"\n",
+      "        city=int(input())\n",
+      "        if city == 0:\n",
+      "            exit(1)\n",
+      "        if city<4 or city>4 :\n",
+      "            running=False\n",
+      "    return city\n",
+      "def read_year():\n",
+      "    running=True\n",
+      "    while running:\n",
+      "        print \"Which year?\"\n",
+      "        year=int(input())\n",
+      "        if year>1950 or year<2000 :\n",
+      "            running=False\n",
+      "    return year\n",
+      "def pop(x,y):\n",
+      "    global pox\n",
+      "    return pox[x-1][(y-1950)/10]\n",
+      "\n",
+      "def output_city():\n",
+      "    if city == 1:\n",
+      "        return \"Madurai\"\n",
+      "    elif city == 2:\n",
+      "        return \"Madras\"\n",
+      "    elif city == 3:\n",
+      "        return \"Bombay\"\n",
+      "    elif city == 4:\n",
+      "        return \"Calcutta\"\n",
+      "        \n",
+      "runnable=True\n",
+      "city=read_city()\n",
+      "while runnable :\n",
+      "    year=read_year()\n",
+      "    print \"Population in \",year,\"of\",output_city(),\"is\",pop(city,year),\"Lakhs\"\n",
+      "    city =read_city()\n",
+      "    if city == 0:\n",
+      "        runnable=False"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Which city?\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "3\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Which year?\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1990\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Population in  1990 of Bombay is 30 Lakhs\n",
+        "Which city?\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "0\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11.ipynb
new file mode 100755
index 00000000..a7a687c2
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11.ipynb
@@ -0,0 +1,404 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:92c507d5a01a7a0413aaf810859ecb2e4626113fce440f0c32977c3febad1c75"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "11:HANDLING OF CHARACTER STRINGS"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.2.1, page number:180"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "inform=['m','a','d','u','r','a','i']\n",
+      "print \"\".join(inform)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "madurai\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.3.1,page number:182"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "inform=\"Thiagaragar\"\n",
+      "numb=int(input(\"No. Of Char To Print \"))\n",
+      "print 'print format = %.0',numb,'s'\n",
+      "print inform[0:numb]"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "No. Of Char To Print 6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "print format = %.0 6 s\n",
+        "Thiaga\n"
+       ]
+      }
+     ],
+     "prompt_number": 4
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.4.1,page number:183"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "inform=\"Thiagaragar\"\n",
+      "numb=int(input(\"No. Of Char To Print \"))\n",
+      "print 'print format = %.0',numb,'s'\n",
+      "print inform[0:numb]"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "No. Of Char To Print 6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "print format = %.0 6 s\n",
+        "Thiaga\n"
+       ]
+      }
+     ],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.5.1,page number:183"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "array1='Thiagarajar Engg'\n",
+      "array2=(array1 + '.')[:-1]\n",
+      "print \"array1 = \",array1\n",
+      "print \"array2 = \",array2"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "array1 =  Thiagarajar Engg\n",
+        "array2 =  Thiagarajar Engg\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.6.1,page number:184"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "userInput = raw_input(\"Enter Int: \")\n",
+      "if userInput.isdigit():\n",
+      "    print \"Number = \"+userInput\n",
+      "else:\n",
+      "    print userInput,\"is not int type\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Int: 8\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Number = 8\n"
+       ]
+      }
+     ],
+     "prompt_number": 7
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.7.1,page number:186"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "first=\"Thiagrajar\"\n",
+      "second=first+\" Engg.\"\n",
+      "\n",
+      "print \"first = \",first\n",
+      "print \"second = \",second"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "first =  Thiagrajar\n",
+        "second =  Thiagrajar Engg.\n"
+       ]
+      }
+     ],
+     "prompt_number": 8
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.8.1,page number:187"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "string1 = \"Hello\"\n",
+      "print \"len of str is\",len(string1)\n",
+      "string2 = \" There\"\n",
+      "print \"string1+string2 is\",string1+string2"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        " len of str is 5\n",
+        "string1+string2 is Hello There\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.12.1, page number:189"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "i=20\n",
+      "size=0\n",
+      "str1 =[]\n",
+      "str2=[]\n",
+      "def readSize():\n",
+      "    global size\n",
+      "    size=int(input(\"Enter number of strings : \"))\n",
+      "    if size<1 or size>i :\n",
+      "        readSize()\n",
+      "    return\n",
+      "def readArray():\n",
+      "    global size\n",
+      "    global str1\n",
+      "    print \"Enter the Strings..\"\n",
+      "    for k in range(0,size):\n",
+      "        m=raw_input()\n",
+      "        str1.append(m)\n",
+      "    return\n",
+      "def displayArray1():\n",
+      "    for index in range(0,size):\n",
+      "        print str1[index]\n",
+      "    return\n",
+      "def displayArray2():\n",
+      "    for index in range(0,size):\n",
+      "        print str2[index]\n",
+      "    return\n",
+      "def sortedArray():\n",
+      "    global str1\n",
+      "    global str2\n",
+      "    str2= sorted(str1)\n",
+      "    return\n",
+      "\n",
+      "readSize()\n",
+      "readArray()\n",
+      "print \"The unsorted array is..\"\n",
+      "displayArray1()\n",
+      "sortedArray()\n",
+      "print \"The sorted array is..\"\n",
+      "displayArray2()"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter number of strings : 6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the Strings..\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "computer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "page\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "diskette\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "eprom\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "binary\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "random\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The unsorted array is..\n",
+        "computer\n",
+        "page\n",
+        "diskette\n",
+        "eprom\n",
+        "binary\n",
+        "random\n",
+        "The sorted array is..\n",
+        "binary\n",
+        "computer\n",
+        "diskette\n",
+        "eprom\n",
+        "page\n",
+        "random\n"
+       ]
+      }
+     ],
+     "prompt_number": 9
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11_1.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11_1.ipynb
new file mode 100755
index 00000000..a7a687c2
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11_1.ipynb
@@ -0,0 +1,404 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:92c507d5a01a7a0413aaf810859ecb2e4626113fce440f0c32977c3febad1c75"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "11:HANDLING OF CHARACTER STRINGS"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.2.1, page number:180"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "inform=['m','a','d','u','r','a','i']\n",
+      "print \"\".join(inform)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "madurai\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.3.1,page number:182"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "inform=\"Thiagaragar\"\n",
+      "numb=int(input(\"No. Of Char To Print \"))\n",
+      "print 'print format = %.0',numb,'s'\n",
+      "print inform[0:numb]"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "No. Of Char To Print 6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "print format = %.0 6 s\n",
+        "Thiaga\n"
+       ]
+      }
+     ],
+     "prompt_number": 4
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.4.1,page number:183"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "inform=\"Thiagaragar\"\n",
+      "numb=int(input(\"No. Of Char To Print \"))\n",
+      "print 'print format = %.0',numb,'s'\n",
+      "print inform[0:numb]"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "No. Of Char To Print 6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "print format = %.0 6 s\n",
+        "Thiaga\n"
+       ]
+      }
+     ],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.5.1,page number:183"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "array1='Thiagarajar Engg'\n",
+      "array2=(array1 + '.')[:-1]\n",
+      "print \"array1 = \",array1\n",
+      "print \"array2 = \",array2"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "array1 =  Thiagarajar Engg\n",
+        "array2 =  Thiagarajar Engg\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.6.1,page number:184"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "userInput = raw_input(\"Enter Int: \")\n",
+      "if userInput.isdigit():\n",
+      "    print \"Number = \"+userInput\n",
+      "else:\n",
+      "    print userInput,\"is not int type\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Int: 8\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Number = 8\n"
+       ]
+      }
+     ],
+     "prompt_number": 7
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.7.1,page number:186"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "first=\"Thiagrajar\"\n",
+      "second=first+\" Engg.\"\n",
+      "\n",
+      "print \"first = \",first\n",
+      "print \"second = \",second"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "first =  Thiagrajar\n",
+        "second =  Thiagrajar Engg.\n"
+       ]
+      }
+     ],
+     "prompt_number": 8
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.8.1,page number:187"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "string1 = \"Hello\"\n",
+      "print \"len of str is\",len(string1)\n",
+      "string2 = \" There\"\n",
+      "print \"string1+string2 is\",string1+string2"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        " len of str is 5\n",
+        "string1+string2 is Hello There\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.12.1, page number:189"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "i=20\n",
+      "size=0\n",
+      "str1 =[]\n",
+      "str2=[]\n",
+      "def readSize():\n",
+      "    global size\n",
+      "    size=int(input(\"Enter number of strings : \"))\n",
+      "    if size<1 or size>i :\n",
+      "        readSize()\n",
+      "    return\n",
+      "def readArray():\n",
+      "    global size\n",
+      "    global str1\n",
+      "    print \"Enter the Strings..\"\n",
+      "    for k in range(0,size):\n",
+      "        m=raw_input()\n",
+      "        str1.append(m)\n",
+      "    return\n",
+      "def displayArray1():\n",
+      "    for index in range(0,size):\n",
+      "        print str1[index]\n",
+      "    return\n",
+      "def displayArray2():\n",
+      "    for index in range(0,size):\n",
+      "        print str2[index]\n",
+      "    return\n",
+      "def sortedArray():\n",
+      "    global str1\n",
+      "    global str2\n",
+      "    str2= sorted(str1)\n",
+      "    return\n",
+      "\n",
+      "readSize()\n",
+      "readArray()\n",
+      "print \"The unsorted array is..\"\n",
+      "displayArray1()\n",
+      "sortedArray()\n",
+      "print \"The sorted array is..\"\n",
+      "displayArray2()"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter number of strings : 6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the Strings..\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "computer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "page\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "diskette\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "eprom\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "binary\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "random\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The unsorted array is..\n",
+        "computer\n",
+        "page\n",
+        "diskette\n",
+        "eprom\n",
+        "binary\n",
+        "random\n",
+        "The sorted array is..\n",
+        "binary\n",
+        "computer\n",
+        "diskette\n",
+        "eprom\n",
+        "page\n",
+        "random\n"
+       ]
+      }
+     ],
+     "prompt_number": 9
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11_10.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11_10.ipynb
new file mode 100755
index 00000000..a7a687c2
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11_10.ipynb
@@ -0,0 +1,404 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:92c507d5a01a7a0413aaf810859ecb2e4626113fce440f0c32977c3febad1c75"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "11:HANDLING OF CHARACTER STRINGS"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.2.1, page number:180"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "inform=['m','a','d','u','r','a','i']\n",
+      "print \"\".join(inform)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "madurai\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.3.1,page number:182"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "inform=\"Thiagaragar\"\n",
+      "numb=int(input(\"No. Of Char To Print \"))\n",
+      "print 'print format = %.0',numb,'s'\n",
+      "print inform[0:numb]"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "No. Of Char To Print 6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "print format = %.0 6 s\n",
+        "Thiaga\n"
+       ]
+      }
+     ],
+     "prompt_number": 4
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.4.1,page number:183"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "inform=\"Thiagaragar\"\n",
+      "numb=int(input(\"No. Of Char To Print \"))\n",
+      "print 'print format = %.0',numb,'s'\n",
+      "print inform[0:numb]"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "No. Of Char To Print 6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "print format = %.0 6 s\n",
+        "Thiaga\n"
+       ]
+      }
+     ],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.5.1,page number:183"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "array1='Thiagarajar Engg'\n",
+      "array2=(array1 + '.')[:-1]\n",
+      "print \"array1 = \",array1\n",
+      "print \"array2 = \",array2"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "array1 =  Thiagarajar Engg\n",
+        "array2 =  Thiagarajar Engg\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.6.1,page number:184"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "userInput = raw_input(\"Enter Int: \")\n",
+      "if userInput.isdigit():\n",
+      "    print \"Number = \"+userInput\n",
+      "else:\n",
+      "    print userInput,\"is not int type\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Int: 8\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Number = 8\n"
+       ]
+      }
+     ],
+     "prompt_number": 7
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.7.1,page number:186"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "first=\"Thiagrajar\"\n",
+      "second=first+\" Engg.\"\n",
+      "\n",
+      "print \"first = \",first\n",
+      "print \"second = \",second"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "first =  Thiagrajar\n",
+        "second =  Thiagrajar Engg.\n"
+       ]
+      }
+     ],
+     "prompt_number": 8
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.8.1,page number:187"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "string1 = \"Hello\"\n",
+      "print \"len of str is\",len(string1)\n",
+      "string2 = \" There\"\n",
+      "print \"string1+string2 is\",string1+string2"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        " len of str is 5\n",
+        "string1+string2 is Hello There\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.12.1, page number:189"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "i=20\n",
+      "size=0\n",
+      "str1 =[]\n",
+      "str2=[]\n",
+      "def readSize():\n",
+      "    global size\n",
+      "    size=int(input(\"Enter number of strings : \"))\n",
+      "    if size<1 or size>i :\n",
+      "        readSize()\n",
+      "    return\n",
+      "def readArray():\n",
+      "    global size\n",
+      "    global str1\n",
+      "    print \"Enter the Strings..\"\n",
+      "    for k in range(0,size):\n",
+      "        m=raw_input()\n",
+      "        str1.append(m)\n",
+      "    return\n",
+      "def displayArray1():\n",
+      "    for index in range(0,size):\n",
+      "        print str1[index]\n",
+      "    return\n",
+      "def displayArray2():\n",
+      "    for index in range(0,size):\n",
+      "        print str2[index]\n",
+      "    return\n",
+      "def sortedArray():\n",
+      "    global str1\n",
+      "    global str2\n",
+      "    str2= sorted(str1)\n",
+      "    return\n",
+      "\n",
+      "readSize()\n",
+      "readArray()\n",
+      "print \"The unsorted array is..\"\n",
+      "displayArray1()\n",
+      "sortedArray()\n",
+      "print \"The sorted array is..\"\n",
+      "displayArray2()"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter number of strings : 6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the Strings..\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "computer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "page\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "diskette\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "eprom\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "binary\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "random\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The unsorted array is..\n",
+        "computer\n",
+        "page\n",
+        "diskette\n",
+        "eprom\n",
+        "binary\n",
+        "random\n",
+        "The sorted array is..\n",
+        "binary\n",
+        "computer\n",
+        "diskette\n",
+        "eprom\n",
+        "page\n",
+        "random\n"
+       ]
+      }
+     ],
+     "prompt_number": 9
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11_11.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11_11.ipynb
new file mode 100755
index 00000000..a7a687c2
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11_11.ipynb
@@ -0,0 +1,404 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:92c507d5a01a7a0413aaf810859ecb2e4626113fce440f0c32977c3febad1c75"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "11:HANDLING OF CHARACTER STRINGS"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.2.1, page number:180"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "inform=['m','a','d','u','r','a','i']\n",
+      "print \"\".join(inform)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "madurai\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.3.1,page number:182"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "inform=\"Thiagaragar\"\n",
+      "numb=int(input(\"No. Of Char To Print \"))\n",
+      "print 'print format = %.0',numb,'s'\n",
+      "print inform[0:numb]"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "No. Of Char To Print 6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "print format = %.0 6 s\n",
+        "Thiaga\n"
+       ]
+      }
+     ],
+     "prompt_number": 4
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.4.1,page number:183"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "inform=\"Thiagaragar\"\n",
+      "numb=int(input(\"No. Of Char To Print \"))\n",
+      "print 'print format = %.0',numb,'s'\n",
+      "print inform[0:numb]"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "No. Of Char To Print 6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "print format = %.0 6 s\n",
+        "Thiaga\n"
+       ]
+      }
+     ],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.5.1,page number:183"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "array1='Thiagarajar Engg'\n",
+      "array2=(array1 + '.')[:-1]\n",
+      "print \"array1 = \",array1\n",
+      "print \"array2 = \",array2"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "array1 =  Thiagarajar Engg\n",
+        "array2 =  Thiagarajar Engg\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.6.1,page number:184"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "userInput = raw_input(\"Enter Int: \")\n",
+      "if userInput.isdigit():\n",
+      "    print \"Number = \"+userInput\n",
+      "else:\n",
+      "    print userInput,\"is not int type\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Int: 8\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Number = 8\n"
+       ]
+      }
+     ],
+     "prompt_number": 7
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.7.1,page number:186"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "first=\"Thiagrajar\"\n",
+      "second=first+\" Engg.\"\n",
+      "\n",
+      "print \"first = \",first\n",
+      "print \"second = \",second"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "first =  Thiagrajar\n",
+        "second =  Thiagrajar Engg.\n"
+       ]
+      }
+     ],
+     "prompt_number": 8
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.8.1,page number:187"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "string1 = \"Hello\"\n",
+      "print \"len of str is\",len(string1)\n",
+      "string2 = \" There\"\n",
+      "print \"string1+string2 is\",string1+string2"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        " len of str is 5\n",
+        "string1+string2 is Hello There\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.12.1, page number:189"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "i=20\n",
+      "size=0\n",
+      "str1 =[]\n",
+      "str2=[]\n",
+      "def readSize():\n",
+      "    global size\n",
+      "    size=int(input(\"Enter number of strings : \"))\n",
+      "    if size<1 or size>i :\n",
+      "        readSize()\n",
+      "    return\n",
+      "def readArray():\n",
+      "    global size\n",
+      "    global str1\n",
+      "    print \"Enter the Strings..\"\n",
+      "    for k in range(0,size):\n",
+      "        m=raw_input()\n",
+      "        str1.append(m)\n",
+      "    return\n",
+      "def displayArray1():\n",
+      "    for index in range(0,size):\n",
+      "        print str1[index]\n",
+      "    return\n",
+      "def displayArray2():\n",
+      "    for index in range(0,size):\n",
+      "        print str2[index]\n",
+      "    return\n",
+      "def sortedArray():\n",
+      "    global str1\n",
+      "    global str2\n",
+      "    str2= sorted(str1)\n",
+      "    return\n",
+      "\n",
+      "readSize()\n",
+      "readArray()\n",
+      "print \"The unsorted array is..\"\n",
+      "displayArray1()\n",
+      "sortedArray()\n",
+      "print \"The sorted array is..\"\n",
+      "displayArray2()"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter number of strings : 6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the Strings..\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "computer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "page\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "diskette\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "eprom\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "binary\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "random\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The unsorted array is..\n",
+        "computer\n",
+        "page\n",
+        "diskette\n",
+        "eprom\n",
+        "binary\n",
+        "random\n",
+        "The sorted array is..\n",
+        "binary\n",
+        "computer\n",
+        "diskette\n",
+        "eprom\n",
+        "page\n",
+        "random\n"
+       ]
+      }
+     ],
+     "prompt_number": 9
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11_12.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11_12.ipynb
new file mode 100755
index 00000000..a7a687c2
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11_12.ipynb
@@ -0,0 +1,404 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:92c507d5a01a7a0413aaf810859ecb2e4626113fce440f0c32977c3febad1c75"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "11:HANDLING OF CHARACTER STRINGS"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.2.1, page number:180"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "inform=['m','a','d','u','r','a','i']\n",
+      "print \"\".join(inform)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "madurai\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.3.1,page number:182"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "inform=\"Thiagaragar\"\n",
+      "numb=int(input(\"No. Of Char To Print \"))\n",
+      "print 'print format = %.0',numb,'s'\n",
+      "print inform[0:numb]"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "No. Of Char To Print 6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "print format = %.0 6 s\n",
+        "Thiaga\n"
+       ]
+      }
+     ],
+     "prompt_number": 4
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.4.1,page number:183"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "inform=\"Thiagaragar\"\n",
+      "numb=int(input(\"No. Of Char To Print \"))\n",
+      "print 'print format = %.0',numb,'s'\n",
+      "print inform[0:numb]"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "No. Of Char To Print 6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "print format = %.0 6 s\n",
+        "Thiaga\n"
+       ]
+      }
+     ],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.5.1,page number:183"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "array1='Thiagarajar Engg'\n",
+      "array2=(array1 + '.')[:-1]\n",
+      "print \"array1 = \",array1\n",
+      "print \"array2 = \",array2"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "array1 =  Thiagarajar Engg\n",
+        "array2 =  Thiagarajar Engg\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.6.1,page number:184"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "userInput = raw_input(\"Enter Int: \")\n",
+      "if userInput.isdigit():\n",
+      "    print \"Number = \"+userInput\n",
+      "else:\n",
+      "    print userInput,\"is not int type\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Int: 8\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Number = 8\n"
+       ]
+      }
+     ],
+     "prompt_number": 7
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.7.1,page number:186"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "first=\"Thiagrajar\"\n",
+      "second=first+\" Engg.\"\n",
+      "\n",
+      "print \"first = \",first\n",
+      "print \"second = \",second"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "first =  Thiagrajar\n",
+        "second =  Thiagrajar Engg.\n"
+       ]
+      }
+     ],
+     "prompt_number": 8
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.8.1,page number:187"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "string1 = \"Hello\"\n",
+      "print \"len of str is\",len(string1)\n",
+      "string2 = \" There\"\n",
+      "print \"string1+string2 is\",string1+string2"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        " len of str is 5\n",
+        "string1+string2 is Hello There\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.12.1, page number:189"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "i=20\n",
+      "size=0\n",
+      "str1 =[]\n",
+      "str2=[]\n",
+      "def readSize():\n",
+      "    global size\n",
+      "    size=int(input(\"Enter number of strings : \"))\n",
+      "    if size<1 or size>i :\n",
+      "        readSize()\n",
+      "    return\n",
+      "def readArray():\n",
+      "    global size\n",
+      "    global str1\n",
+      "    print \"Enter the Strings..\"\n",
+      "    for k in range(0,size):\n",
+      "        m=raw_input()\n",
+      "        str1.append(m)\n",
+      "    return\n",
+      "def displayArray1():\n",
+      "    for index in range(0,size):\n",
+      "        print str1[index]\n",
+      "    return\n",
+      "def displayArray2():\n",
+      "    for index in range(0,size):\n",
+      "        print str2[index]\n",
+      "    return\n",
+      "def sortedArray():\n",
+      "    global str1\n",
+      "    global str2\n",
+      "    str2= sorted(str1)\n",
+      "    return\n",
+      "\n",
+      "readSize()\n",
+      "readArray()\n",
+      "print \"The unsorted array is..\"\n",
+      "displayArray1()\n",
+      "sortedArray()\n",
+      "print \"The sorted array is..\"\n",
+      "displayArray2()"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter number of strings : 6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the Strings..\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "computer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "page\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "diskette\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "eprom\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "binary\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "random\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The unsorted array is..\n",
+        "computer\n",
+        "page\n",
+        "diskette\n",
+        "eprom\n",
+        "binary\n",
+        "random\n",
+        "The sorted array is..\n",
+        "binary\n",
+        "computer\n",
+        "diskette\n",
+        "eprom\n",
+        "page\n",
+        "random\n"
+       ]
+      }
+     ],
+     "prompt_number": 9
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11_13.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11_13.ipynb
new file mode 100755
index 00000000..a7a687c2
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11_13.ipynb
@@ -0,0 +1,404 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:92c507d5a01a7a0413aaf810859ecb2e4626113fce440f0c32977c3febad1c75"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "11:HANDLING OF CHARACTER STRINGS"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.2.1, page number:180"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "inform=['m','a','d','u','r','a','i']\n",
+      "print \"\".join(inform)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "madurai\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.3.1,page number:182"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "inform=\"Thiagaragar\"\n",
+      "numb=int(input(\"No. Of Char To Print \"))\n",
+      "print 'print format = %.0',numb,'s'\n",
+      "print inform[0:numb]"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "No. Of Char To Print 6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "print format = %.0 6 s\n",
+        "Thiaga\n"
+       ]
+      }
+     ],
+     "prompt_number": 4
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.4.1,page number:183"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "inform=\"Thiagaragar\"\n",
+      "numb=int(input(\"No. Of Char To Print \"))\n",
+      "print 'print format = %.0',numb,'s'\n",
+      "print inform[0:numb]"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "No. Of Char To Print 6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "print format = %.0 6 s\n",
+        "Thiaga\n"
+       ]
+      }
+     ],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.5.1,page number:183"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "array1='Thiagarajar Engg'\n",
+      "array2=(array1 + '.')[:-1]\n",
+      "print \"array1 = \",array1\n",
+      "print \"array2 = \",array2"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "array1 =  Thiagarajar Engg\n",
+        "array2 =  Thiagarajar Engg\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.6.1,page number:184"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "userInput = raw_input(\"Enter Int: \")\n",
+      "if userInput.isdigit():\n",
+      "    print \"Number = \"+userInput\n",
+      "else:\n",
+      "    print userInput,\"is not int type\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Int: 8\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Number = 8\n"
+       ]
+      }
+     ],
+     "prompt_number": 7
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.7.1,page number:186"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "first=\"Thiagrajar\"\n",
+      "second=first+\" Engg.\"\n",
+      "\n",
+      "print \"first = \",first\n",
+      "print \"second = \",second"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "first =  Thiagrajar\n",
+        "second =  Thiagrajar Engg.\n"
+       ]
+      }
+     ],
+     "prompt_number": 8
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.8.1,page number:187"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "string1 = \"Hello\"\n",
+      "print \"len of str is\",len(string1)\n",
+      "string2 = \" There\"\n",
+      "print \"string1+string2 is\",string1+string2"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        " len of str is 5\n",
+        "string1+string2 is Hello There\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.12.1, page number:189"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "i=20\n",
+      "size=0\n",
+      "str1 =[]\n",
+      "str2=[]\n",
+      "def readSize():\n",
+      "    global size\n",
+      "    size=int(input(\"Enter number of strings : \"))\n",
+      "    if size<1 or size>i :\n",
+      "        readSize()\n",
+      "    return\n",
+      "def readArray():\n",
+      "    global size\n",
+      "    global str1\n",
+      "    print \"Enter the Strings..\"\n",
+      "    for k in range(0,size):\n",
+      "        m=raw_input()\n",
+      "        str1.append(m)\n",
+      "    return\n",
+      "def displayArray1():\n",
+      "    for index in range(0,size):\n",
+      "        print str1[index]\n",
+      "    return\n",
+      "def displayArray2():\n",
+      "    for index in range(0,size):\n",
+      "        print str2[index]\n",
+      "    return\n",
+      "def sortedArray():\n",
+      "    global str1\n",
+      "    global str2\n",
+      "    str2= sorted(str1)\n",
+      "    return\n",
+      "\n",
+      "readSize()\n",
+      "readArray()\n",
+      "print \"The unsorted array is..\"\n",
+      "displayArray1()\n",
+      "sortedArray()\n",
+      "print \"The sorted array is..\"\n",
+      "displayArray2()"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter number of strings : 6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the Strings..\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "computer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "page\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "diskette\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "eprom\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "binary\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "random\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The unsorted array is..\n",
+        "computer\n",
+        "page\n",
+        "diskette\n",
+        "eprom\n",
+        "binary\n",
+        "random\n",
+        "The sorted array is..\n",
+        "binary\n",
+        "computer\n",
+        "diskette\n",
+        "eprom\n",
+        "page\n",
+        "random\n"
+       ]
+      }
+     ],
+     "prompt_number": 9
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11_14.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11_14.ipynb
new file mode 100755
index 00000000..a7a687c2
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11_14.ipynb
@@ -0,0 +1,404 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:92c507d5a01a7a0413aaf810859ecb2e4626113fce440f0c32977c3febad1c75"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "11:HANDLING OF CHARACTER STRINGS"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.2.1, page number:180"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "inform=['m','a','d','u','r','a','i']\n",
+      "print \"\".join(inform)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "madurai\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.3.1,page number:182"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "inform=\"Thiagaragar\"\n",
+      "numb=int(input(\"No. Of Char To Print \"))\n",
+      "print 'print format = %.0',numb,'s'\n",
+      "print inform[0:numb]"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "No. Of Char To Print 6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "print format = %.0 6 s\n",
+        "Thiaga\n"
+       ]
+      }
+     ],
+     "prompt_number": 4
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.4.1,page number:183"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "inform=\"Thiagaragar\"\n",
+      "numb=int(input(\"No. Of Char To Print \"))\n",
+      "print 'print format = %.0',numb,'s'\n",
+      "print inform[0:numb]"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "No. Of Char To Print 6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "print format = %.0 6 s\n",
+        "Thiaga\n"
+       ]
+      }
+     ],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.5.1,page number:183"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "array1='Thiagarajar Engg'\n",
+      "array2=(array1 + '.')[:-1]\n",
+      "print \"array1 = \",array1\n",
+      "print \"array2 = \",array2"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "array1 =  Thiagarajar Engg\n",
+        "array2 =  Thiagarajar Engg\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.6.1,page number:184"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "userInput = raw_input(\"Enter Int: \")\n",
+      "if userInput.isdigit():\n",
+      "    print \"Number = \"+userInput\n",
+      "else:\n",
+      "    print userInput,\"is not int type\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Int: 8\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Number = 8\n"
+       ]
+      }
+     ],
+     "prompt_number": 7
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.7.1,page number:186"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "first=\"Thiagrajar\"\n",
+      "second=first+\" Engg.\"\n",
+      "\n",
+      "print \"first = \",first\n",
+      "print \"second = \",second"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "first =  Thiagrajar\n",
+        "second =  Thiagrajar Engg.\n"
+       ]
+      }
+     ],
+     "prompt_number": 8
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.8.1,page number:187"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "string1 = \"Hello\"\n",
+      "print \"len of str is\",len(string1)\n",
+      "string2 = \" There\"\n",
+      "print \"string1+string2 is\",string1+string2"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        " len of str is 5\n",
+        "string1+string2 is Hello There\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.12.1, page number:189"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "i=20\n",
+      "size=0\n",
+      "str1 =[]\n",
+      "str2=[]\n",
+      "def readSize():\n",
+      "    global size\n",
+      "    size=int(input(\"Enter number of strings : \"))\n",
+      "    if size<1 or size>i :\n",
+      "        readSize()\n",
+      "    return\n",
+      "def readArray():\n",
+      "    global size\n",
+      "    global str1\n",
+      "    print \"Enter the Strings..\"\n",
+      "    for k in range(0,size):\n",
+      "        m=raw_input()\n",
+      "        str1.append(m)\n",
+      "    return\n",
+      "def displayArray1():\n",
+      "    for index in range(0,size):\n",
+      "        print str1[index]\n",
+      "    return\n",
+      "def displayArray2():\n",
+      "    for index in range(0,size):\n",
+      "        print str2[index]\n",
+      "    return\n",
+      "def sortedArray():\n",
+      "    global str1\n",
+      "    global str2\n",
+      "    str2= sorted(str1)\n",
+      "    return\n",
+      "\n",
+      "readSize()\n",
+      "readArray()\n",
+      "print \"The unsorted array is..\"\n",
+      "displayArray1()\n",
+      "sortedArray()\n",
+      "print \"The sorted array is..\"\n",
+      "displayArray2()"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter number of strings : 6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the Strings..\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "computer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "page\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "diskette\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "eprom\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "binary\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "random\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The unsorted array is..\n",
+        "computer\n",
+        "page\n",
+        "diskette\n",
+        "eprom\n",
+        "binary\n",
+        "random\n",
+        "The sorted array is..\n",
+        "binary\n",
+        "computer\n",
+        "diskette\n",
+        "eprom\n",
+        "page\n",
+        "random\n"
+       ]
+      }
+     ],
+     "prompt_number": 9
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11_15.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11_15.ipynb
new file mode 100755
index 00000000..a7a687c2
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11_15.ipynb
@@ -0,0 +1,404 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:92c507d5a01a7a0413aaf810859ecb2e4626113fce440f0c32977c3febad1c75"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "11:HANDLING OF CHARACTER STRINGS"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.2.1, page number:180"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "inform=['m','a','d','u','r','a','i']\n",
+      "print \"\".join(inform)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "madurai\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.3.1,page number:182"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "inform=\"Thiagaragar\"\n",
+      "numb=int(input(\"No. Of Char To Print \"))\n",
+      "print 'print format = %.0',numb,'s'\n",
+      "print inform[0:numb]"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "No. Of Char To Print 6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "print format = %.0 6 s\n",
+        "Thiaga\n"
+       ]
+      }
+     ],
+     "prompt_number": 4
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.4.1,page number:183"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "inform=\"Thiagaragar\"\n",
+      "numb=int(input(\"No. Of Char To Print \"))\n",
+      "print 'print format = %.0',numb,'s'\n",
+      "print inform[0:numb]"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "No. Of Char To Print 6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "print format = %.0 6 s\n",
+        "Thiaga\n"
+       ]
+      }
+     ],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.5.1,page number:183"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "array1='Thiagarajar Engg'\n",
+      "array2=(array1 + '.')[:-1]\n",
+      "print \"array1 = \",array1\n",
+      "print \"array2 = \",array2"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "array1 =  Thiagarajar Engg\n",
+        "array2 =  Thiagarajar Engg\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.6.1,page number:184"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "userInput = raw_input(\"Enter Int: \")\n",
+      "if userInput.isdigit():\n",
+      "    print \"Number = \"+userInput\n",
+      "else:\n",
+      "    print userInput,\"is not int type\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Int: 8\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Number = 8\n"
+       ]
+      }
+     ],
+     "prompt_number": 7
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.7.1,page number:186"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "first=\"Thiagrajar\"\n",
+      "second=first+\" Engg.\"\n",
+      "\n",
+      "print \"first = \",first\n",
+      "print \"second = \",second"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "first =  Thiagrajar\n",
+        "second =  Thiagrajar Engg.\n"
+       ]
+      }
+     ],
+     "prompt_number": 8
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.8.1,page number:187"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "string1 = \"Hello\"\n",
+      "print \"len of str is\",len(string1)\n",
+      "string2 = \" There\"\n",
+      "print \"string1+string2 is\",string1+string2"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        " len of str is 5\n",
+        "string1+string2 is Hello There\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.12.1, page number:189"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "i=20\n",
+      "size=0\n",
+      "str1 =[]\n",
+      "str2=[]\n",
+      "def readSize():\n",
+      "    global size\n",
+      "    size=int(input(\"Enter number of strings : \"))\n",
+      "    if size<1 or size>i :\n",
+      "        readSize()\n",
+      "    return\n",
+      "def readArray():\n",
+      "    global size\n",
+      "    global str1\n",
+      "    print \"Enter the Strings..\"\n",
+      "    for k in range(0,size):\n",
+      "        m=raw_input()\n",
+      "        str1.append(m)\n",
+      "    return\n",
+      "def displayArray1():\n",
+      "    for index in range(0,size):\n",
+      "        print str1[index]\n",
+      "    return\n",
+      "def displayArray2():\n",
+      "    for index in range(0,size):\n",
+      "        print str2[index]\n",
+      "    return\n",
+      "def sortedArray():\n",
+      "    global str1\n",
+      "    global str2\n",
+      "    str2= sorted(str1)\n",
+      "    return\n",
+      "\n",
+      "readSize()\n",
+      "readArray()\n",
+      "print \"The unsorted array is..\"\n",
+      "displayArray1()\n",
+      "sortedArray()\n",
+      "print \"The sorted array is..\"\n",
+      "displayArray2()"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter number of strings : 6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the Strings..\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "computer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "page\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "diskette\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "eprom\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "binary\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "random\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The unsorted array is..\n",
+        "computer\n",
+        "page\n",
+        "diskette\n",
+        "eprom\n",
+        "binary\n",
+        "random\n",
+        "The sorted array is..\n",
+        "binary\n",
+        "computer\n",
+        "diskette\n",
+        "eprom\n",
+        "page\n",
+        "random\n"
+       ]
+      }
+     ],
+     "prompt_number": 9
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11_2.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11_2.ipynb
new file mode 100755
index 00000000..a7a687c2
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11_2.ipynb
@@ -0,0 +1,404 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:92c507d5a01a7a0413aaf810859ecb2e4626113fce440f0c32977c3febad1c75"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "11:HANDLING OF CHARACTER STRINGS"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.2.1, page number:180"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "inform=['m','a','d','u','r','a','i']\n",
+      "print \"\".join(inform)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "madurai\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.3.1,page number:182"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "inform=\"Thiagaragar\"\n",
+      "numb=int(input(\"No. Of Char To Print \"))\n",
+      "print 'print format = %.0',numb,'s'\n",
+      "print inform[0:numb]"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "No. Of Char To Print 6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "print format = %.0 6 s\n",
+        "Thiaga\n"
+       ]
+      }
+     ],
+     "prompt_number": 4
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.4.1,page number:183"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "inform=\"Thiagaragar\"\n",
+      "numb=int(input(\"No. Of Char To Print \"))\n",
+      "print 'print format = %.0',numb,'s'\n",
+      "print inform[0:numb]"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "No. Of Char To Print 6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "print format = %.0 6 s\n",
+        "Thiaga\n"
+       ]
+      }
+     ],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.5.1,page number:183"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "array1='Thiagarajar Engg'\n",
+      "array2=(array1 + '.')[:-1]\n",
+      "print \"array1 = \",array1\n",
+      "print \"array2 = \",array2"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "array1 =  Thiagarajar Engg\n",
+        "array2 =  Thiagarajar Engg\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.6.1,page number:184"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "userInput = raw_input(\"Enter Int: \")\n",
+      "if userInput.isdigit():\n",
+      "    print \"Number = \"+userInput\n",
+      "else:\n",
+      "    print userInput,\"is not int type\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Int: 8\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Number = 8\n"
+       ]
+      }
+     ],
+     "prompt_number": 7
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.7.1,page number:186"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "first=\"Thiagrajar\"\n",
+      "second=first+\" Engg.\"\n",
+      "\n",
+      "print \"first = \",first\n",
+      "print \"second = \",second"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "first =  Thiagrajar\n",
+        "second =  Thiagrajar Engg.\n"
+       ]
+      }
+     ],
+     "prompt_number": 8
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.8.1,page number:187"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "string1 = \"Hello\"\n",
+      "print \"len of str is\",len(string1)\n",
+      "string2 = \" There\"\n",
+      "print \"string1+string2 is\",string1+string2"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        " len of str is 5\n",
+        "string1+string2 is Hello There\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.12.1, page number:189"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "i=20\n",
+      "size=0\n",
+      "str1 =[]\n",
+      "str2=[]\n",
+      "def readSize():\n",
+      "    global size\n",
+      "    size=int(input(\"Enter number of strings : \"))\n",
+      "    if size<1 or size>i :\n",
+      "        readSize()\n",
+      "    return\n",
+      "def readArray():\n",
+      "    global size\n",
+      "    global str1\n",
+      "    print \"Enter the Strings..\"\n",
+      "    for k in range(0,size):\n",
+      "        m=raw_input()\n",
+      "        str1.append(m)\n",
+      "    return\n",
+      "def displayArray1():\n",
+      "    for index in range(0,size):\n",
+      "        print str1[index]\n",
+      "    return\n",
+      "def displayArray2():\n",
+      "    for index in range(0,size):\n",
+      "        print str2[index]\n",
+      "    return\n",
+      "def sortedArray():\n",
+      "    global str1\n",
+      "    global str2\n",
+      "    str2= sorted(str1)\n",
+      "    return\n",
+      "\n",
+      "readSize()\n",
+      "readArray()\n",
+      "print \"The unsorted array is..\"\n",
+      "displayArray1()\n",
+      "sortedArray()\n",
+      "print \"The sorted array is..\"\n",
+      "displayArray2()"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter number of strings : 6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the Strings..\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "computer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "page\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "diskette\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "eprom\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "binary\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "random\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The unsorted array is..\n",
+        "computer\n",
+        "page\n",
+        "diskette\n",
+        "eprom\n",
+        "binary\n",
+        "random\n",
+        "The sorted array is..\n",
+        "binary\n",
+        "computer\n",
+        "diskette\n",
+        "eprom\n",
+        "page\n",
+        "random\n"
+       ]
+      }
+     ],
+     "prompt_number": 9
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11_3.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11_3.ipynb
new file mode 100755
index 00000000..a7a687c2
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11_3.ipynb
@@ -0,0 +1,404 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:92c507d5a01a7a0413aaf810859ecb2e4626113fce440f0c32977c3febad1c75"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "11:HANDLING OF CHARACTER STRINGS"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.2.1, page number:180"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "inform=['m','a','d','u','r','a','i']\n",
+      "print \"\".join(inform)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "madurai\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.3.1,page number:182"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "inform=\"Thiagaragar\"\n",
+      "numb=int(input(\"No. Of Char To Print \"))\n",
+      "print 'print format = %.0',numb,'s'\n",
+      "print inform[0:numb]"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "No. Of Char To Print 6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "print format = %.0 6 s\n",
+        "Thiaga\n"
+       ]
+      }
+     ],
+     "prompt_number": 4
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.4.1,page number:183"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "inform=\"Thiagaragar\"\n",
+      "numb=int(input(\"No. Of Char To Print \"))\n",
+      "print 'print format = %.0',numb,'s'\n",
+      "print inform[0:numb]"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "No. Of Char To Print 6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "print format = %.0 6 s\n",
+        "Thiaga\n"
+       ]
+      }
+     ],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.5.1,page number:183"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "array1='Thiagarajar Engg'\n",
+      "array2=(array1 + '.')[:-1]\n",
+      "print \"array1 = \",array1\n",
+      "print \"array2 = \",array2"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "array1 =  Thiagarajar Engg\n",
+        "array2 =  Thiagarajar Engg\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.6.1,page number:184"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "userInput = raw_input(\"Enter Int: \")\n",
+      "if userInput.isdigit():\n",
+      "    print \"Number = \"+userInput\n",
+      "else:\n",
+      "    print userInput,\"is not int type\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Int: 8\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Number = 8\n"
+       ]
+      }
+     ],
+     "prompt_number": 7
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.7.1,page number:186"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "first=\"Thiagrajar\"\n",
+      "second=first+\" Engg.\"\n",
+      "\n",
+      "print \"first = \",first\n",
+      "print \"second = \",second"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "first =  Thiagrajar\n",
+        "second =  Thiagrajar Engg.\n"
+       ]
+      }
+     ],
+     "prompt_number": 8
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.8.1,page number:187"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "string1 = \"Hello\"\n",
+      "print \"len of str is\",len(string1)\n",
+      "string2 = \" There\"\n",
+      "print \"string1+string2 is\",string1+string2"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        " len of str is 5\n",
+        "string1+string2 is Hello There\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.12.1, page number:189"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "i=20\n",
+      "size=0\n",
+      "str1 =[]\n",
+      "str2=[]\n",
+      "def readSize():\n",
+      "    global size\n",
+      "    size=int(input(\"Enter number of strings : \"))\n",
+      "    if size<1 or size>i :\n",
+      "        readSize()\n",
+      "    return\n",
+      "def readArray():\n",
+      "    global size\n",
+      "    global str1\n",
+      "    print \"Enter the Strings..\"\n",
+      "    for k in range(0,size):\n",
+      "        m=raw_input()\n",
+      "        str1.append(m)\n",
+      "    return\n",
+      "def displayArray1():\n",
+      "    for index in range(0,size):\n",
+      "        print str1[index]\n",
+      "    return\n",
+      "def displayArray2():\n",
+      "    for index in range(0,size):\n",
+      "        print str2[index]\n",
+      "    return\n",
+      "def sortedArray():\n",
+      "    global str1\n",
+      "    global str2\n",
+      "    str2= sorted(str1)\n",
+      "    return\n",
+      "\n",
+      "readSize()\n",
+      "readArray()\n",
+      "print \"The unsorted array is..\"\n",
+      "displayArray1()\n",
+      "sortedArray()\n",
+      "print \"The sorted array is..\"\n",
+      "displayArray2()"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter number of strings : 6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the Strings..\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "computer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "page\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "diskette\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "eprom\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "binary\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "random\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The unsorted array is..\n",
+        "computer\n",
+        "page\n",
+        "diskette\n",
+        "eprom\n",
+        "binary\n",
+        "random\n",
+        "The sorted array is..\n",
+        "binary\n",
+        "computer\n",
+        "diskette\n",
+        "eprom\n",
+        "page\n",
+        "random\n"
+       ]
+      }
+     ],
+     "prompt_number": 9
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11_4.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11_4.ipynb
new file mode 100755
index 00000000..a7a687c2
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11_4.ipynb
@@ -0,0 +1,404 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:92c507d5a01a7a0413aaf810859ecb2e4626113fce440f0c32977c3febad1c75"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "11:HANDLING OF CHARACTER STRINGS"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.2.1, page number:180"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "inform=['m','a','d','u','r','a','i']\n",
+      "print \"\".join(inform)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "madurai\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.3.1,page number:182"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "inform=\"Thiagaragar\"\n",
+      "numb=int(input(\"No. Of Char To Print \"))\n",
+      "print 'print format = %.0',numb,'s'\n",
+      "print inform[0:numb]"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "No. Of Char To Print 6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "print format = %.0 6 s\n",
+        "Thiaga\n"
+       ]
+      }
+     ],
+     "prompt_number": 4
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.4.1,page number:183"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "inform=\"Thiagaragar\"\n",
+      "numb=int(input(\"No. Of Char To Print \"))\n",
+      "print 'print format = %.0',numb,'s'\n",
+      "print inform[0:numb]"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "No. Of Char To Print 6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "print format = %.0 6 s\n",
+        "Thiaga\n"
+       ]
+      }
+     ],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.5.1,page number:183"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "array1='Thiagarajar Engg'\n",
+      "array2=(array1 + '.')[:-1]\n",
+      "print \"array1 = \",array1\n",
+      "print \"array2 = \",array2"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "array1 =  Thiagarajar Engg\n",
+        "array2 =  Thiagarajar Engg\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.6.1,page number:184"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "userInput = raw_input(\"Enter Int: \")\n",
+      "if userInput.isdigit():\n",
+      "    print \"Number = \"+userInput\n",
+      "else:\n",
+      "    print userInput,\"is not int type\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Int: 8\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Number = 8\n"
+       ]
+      }
+     ],
+     "prompt_number": 7
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.7.1,page number:186"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "first=\"Thiagrajar\"\n",
+      "second=first+\" Engg.\"\n",
+      "\n",
+      "print \"first = \",first\n",
+      "print \"second = \",second"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "first =  Thiagrajar\n",
+        "second =  Thiagrajar Engg.\n"
+       ]
+      }
+     ],
+     "prompt_number": 8
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.8.1,page number:187"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "string1 = \"Hello\"\n",
+      "print \"len of str is\",len(string1)\n",
+      "string2 = \" There\"\n",
+      "print \"string1+string2 is\",string1+string2"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        " len of str is 5\n",
+        "string1+string2 is Hello There\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.12.1, page number:189"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "i=20\n",
+      "size=0\n",
+      "str1 =[]\n",
+      "str2=[]\n",
+      "def readSize():\n",
+      "    global size\n",
+      "    size=int(input(\"Enter number of strings : \"))\n",
+      "    if size<1 or size>i :\n",
+      "        readSize()\n",
+      "    return\n",
+      "def readArray():\n",
+      "    global size\n",
+      "    global str1\n",
+      "    print \"Enter the Strings..\"\n",
+      "    for k in range(0,size):\n",
+      "        m=raw_input()\n",
+      "        str1.append(m)\n",
+      "    return\n",
+      "def displayArray1():\n",
+      "    for index in range(0,size):\n",
+      "        print str1[index]\n",
+      "    return\n",
+      "def displayArray2():\n",
+      "    for index in range(0,size):\n",
+      "        print str2[index]\n",
+      "    return\n",
+      "def sortedArray():\n",
+      "    global str1\n",
+      "    global str2\n",
+      "    str2= sorted(str1)\n",
+      "    return\n",
+      "\n",
+      "readSize()\n",
+      "readArray()\n",
+      "print \"The unsorted array is..\"\n",
+      "displayArray1()\n",
+      "sortedArray()\n",
+      "print \"The sorted array is..\"\n",
+      "displayArray2()"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter number of strings : 6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the Strings..\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "computer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "page\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "diskette\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "eprom\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "binary\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "random\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The unsorted array is..\n",
+        "computer\n",
+        "page\n",
+        "diskette\n",
+        "eprom\n",
+        "binary\n",
+        "random\n",
+        "The sorted array is..\n",
+        "binary\n",
+        "computer\n",
+        "diskette\n",
+        "eprom\n",
+        "page\n",
+        "random\n"
+       ]
+      }
+     ],
+     "prompt_number": 9
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11_5.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11_5.ipynb
new file mode 100755
index 00000000..a7a687c2
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11_5.ipynb
@@ -0,0 +1,404 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:92c507d5a01a7a0413aaf810859ecb2e4626113fce440f0c32977c3febad1c75"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "11:HANDLING OF CHARACTER STRINGS"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.2.1, page number:180"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "inform=['m','a','d','u','r','a','i']\n",
+      "print \"\".join(inform)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "madurai\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.3.1,page number:182"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "inform=\"Thiagaragar\"\n",
+      "numb=int(input(\"No. Of Char To Print \"))\n",
+      "print 'print format = %.0',numb,'s'\n",
+      "print inform[0:numb]"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "No. Of Char To Print 6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "print format = %.0 6 s\n",
+        "Thiaga\n"
+       ]
+      }
+     ],
+     "prompt_number": 4
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.4.1,page number:183"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "inform=\"Thiagaragar\"\n",
+      "numb=int(input(\"No. Of Char To Print \"))\n",
+      "print 'print format = %.0',numb,'s'\n",
+      "print inform[0:numb]"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "No. Of Char To Print 6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "print format = %.0 6 s\n",
+        "Thiaga\n"
+       ]
+      }
+     ],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.5.1,page number:183"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "array1='Thiagarajar Engg'\n",
+      "array2=(array1 + '.')[:-1]\n",
+      "print \"array1 = \",array1\n",
+      "print \"array2 = \",array2"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "array1 =  Thiagarajar Engg\n",
+        "array2 =  Thiagarajar Engg\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.6.1,page number:184"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "userInput = raw_input(\"Enter Int: \")\n",
+      "if userInput.isdigit():\n",
+      "    print \"Number = \"+userInput\n",
+      "else:\n",
+      "    print userInput,\"is not int type\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Int: 8\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Number = 8\n"
+       ]
+      }
+     ],
+     "prompt_number": 7
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.7.1,page number:186"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "first=\"Thiagrajar\"\n",
+      "second=first+\" Engg.\"\n",
+      "\n",
+      "print \"first = \",first\n",
+      "print \"second = \",second"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "first =  Thiagrajar\n",
+        "second =  Thiagrajar Engg.\n"
+       ]
+      }
+     ],
+     "prompt_number": 8
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.8.1,page number:187"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "string1 = \"Hello\"\n",
+      "print \"len of str is\",len(string1)\n",
+      "string2 = \" There\"\n",
+      "print \"string1+string2 is\",string1+string2"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        " len of str is 5\n",
+        "string1+string2 is Hello There\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.12.1, page number:189"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "i=20\n",
+      "size=0\n",
+      "str1 =[]\n",
+      "str2=[]\n",
+      "def readSize():\n",
+      "    global size\n",
+      "    size=int(input(\"Enter number of strings : \"))\n",
+      "    if size<1 or size>i :\n",
+      "        readSize()\n",
+      "    return\n",
+      "def readArray():\n",
+      "    global size\n",
+      "    global str1\n",
+      "    print \"Enter the Strings..\"\n",
+      "    for k in range(0,size):\n",
+      "        m=raw_input()\n",
+      "        str1.append(m)\n",
+      "    return\n",
+      "def displayArray1():\n",
+      "    for index in range(0,size):\n",
+      "        print str1[index]\n",
+      "    return\n",
+      "def displayArray2():\n",
+      "    for index in range(0,size):\n",
+      "        print str2[index]\n",
+      "    return\n",
+      "def sortedArray():\n",
+      "    global str1\n",
+      "    global str2\n",
+      "    str2= sorted(str1)\n",
+      "    return\n",
+      "\n",
+      "readSize()\n",
+      "readArray()\n",
+      "print \"The unsorted array is..\"\n",
+      "displayArray1()\n",
+      "sortedArray()\n",
+      "print \"The sorted array is..\"\n",
+      "displayArray2()"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter number of strings : 6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the Strings..\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "computer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "page\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "diskette\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "eprom\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "binary\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "random\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The unsorted array is..\n",
+        "computer\n",
+        "page\n",
+        "diskette\n",
+        "eprom\n",
+        "binary\n",
+        "random\n",
+        "The sorted array is..\n",
+        "binary\n",
+        "computer\n",
+        "diskette\n",
+        "eprom\n",
+        "page\n",
+        "random\n"
+       ]
+      }
+     ],
+     "prompt_number": 9
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11_6.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11_6.ipynb
new file mode 100755
index 00000000..a7a687c2
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11_6.ipynb
@@ -0,0 +1,404 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:92c507d5a01a7a0413aaf810859ecb2e4626113fce440f0c32977c3febad1c75"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "11:HANDLING OF CHARACTER STRINGS"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.2.1, page number:180"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "inform=['m','a','d','u','r','a','i']\n",
+      "print \"\".join(inform)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "madurai\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.3.1,page number:182"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "inform=\"Thiagaragar\"\n",
+      "numb=int(input(\"No. Of Char To Print \"))\n",
+      "print 'print format = %.0',numb,'s'\n",
+      "print inform[0:numb]"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "No. Of Char To Print 6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "print format = %.0 6 s\n",
+        "Thiaga\n"
+       ]
+      }
+     ],
+     "prompt_number": 4
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.4.1,page number:183"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "inform=\"Thiagaragar\"\n",
+      "numb=int(input(\"No. Of Char To Print \"))\n",
+      "print 'print format = %.0',numb,'s'\n",
+      "print inform[0:numb]"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "No. Of Char To Print 6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "print format = %.0 6 s\n",
+        "Thiaga\n"
+       ]
+      }
+     ],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.5.1,page number:183"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "array1='Thiagarajar Engg'\n",
+      "array2=(array1 + '.')[:-1]\n",
+      "print \"array1 = \",array1\n",
+      "print \"array2 = \",array2"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "array1 =  Thiagarajar Engg\n",
+        "array2 =  Thiagarajar Engg\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.6.1,page number:184"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "userInput = raw_input(\"Enter Int: \")\n",
+      "if userInput.isdigit():\n",
+      "    print \"Number = \"+userInput\n",
+      "else:\n",
+      "    print userInput,\"is not int type\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Int: 8\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Number = 8\n"
+       ]
+      }
+     ],
+     "prompt_number": 7
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.7.1,page number:186"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "first=\"Thiagrajar\"\n",
+      "second=first+\" Engg.\"\n",
+      "\n",
+      "print \"first = \",first\n",
+      "print \"second = \",second"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "first =  Thiagrajar\n",
+        "second =  Thiagrajar Engg.\n"
+       ]
+      }
+     ],
+     "prompt_number": 8
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.8.1,page number:187"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "string1 = \"Hello\"\n",
+      "print \"len of str is\",len(string1)\n",
+      "string2 = \" There\"\n",
+      "print \"string1+string2 is\",string1+string2"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        " len of str is 5\n",
+        "string1+string2 is Hello There\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.12.1, page number:189"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "i=20\n",
+      "size=0\n",
+      "str1 =[]\n",
+      "str2=[]\n",
+      "def readSize():\n",
+      "    global size\n",
+      "    size=int(input(\"Enter number of strings : \"))\n",
+      "    if size<1 or size>i :\n",
+      "        readSize()\n",
+      "    return\n",
+      "def readArray():\n",
+      "    global size\n",
+      "    global str1\n",
+      "    print \"Enter the Strings..\"\n",
+      "    for k in range(0,size):\n",
+      "        m=raw_input()\n",
+      "        str1.append(m)\n",
+      "    return\n",
+      "def displayArray1():\n",
+      "    for index in range(0,size):\n",
+      "        print str1[index]\n",
+      "    return\n",
+      "def displayArray2():\n",
+      "    for index in range(0,size):\n",
+      "        print str2[index]\n",
+      "    return\n",
+      "def sortedArray():\n",
+      "    global str1\n",
+      "    global str2\n",
+      "    str2= sorted(str1)\n",
+      "    return\n",
+      "\n",
+      "readSize()\n",
+      "readArray()\n",
+      "print \"The unsorted array is..\"\n",
+      "displayArray1()\n",
+      "sortedArray()\n",
+      "print \"The sorted array is..\"\n",
+      "displayArray2()"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter number of strings : 6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the Strings..\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "computer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "page\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "diskette\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "eprom\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "binary\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "random\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The unsorted array is..\n",
+        "computer\n",
+        "page\n",
+        "diskette\n",
+        "eprom\n",
+        "binary\n",
+        "random\n",
+        "The sorted array is..\n",
+        "binary\n",
+        "computer\n",
+        "diskette\n",
+        "eprom\n",
+        "page\n",
+        "random\n"
+       ]
+      }
+     ],
+     "prompt_number": 9
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11_7.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11_7.ipynb
new file mode 100755
index 00000000..a7a687c2
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11_7.ipynb
@@ -0,0 +1,404 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:92c507d5a01a7a0413aaf810859ecb2e4626113fce440f0c32977c3febad1c75"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "11:HANDLING OF CHARACTER STRINGS"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.2.1, page number:180"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "inform=['m','a','d','u','r','a','i']\n",
+      "print \"\".join(inform)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "madurai\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.3.1,page number:182"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "inform=\"Thiagaragar\"\n",
+      "numb=int(input(\"No. Of Char To Print \"))\n",
+      "print 'print format = %.0',numb,'s'\n",
+      "print inform[0:numb]"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "No. Of Char To Print 6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "print format = %.0 6 s\n",
+        "Thiaga\n"
+       ]
+      }
+     ],
+     "prompt_number": 4
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.4.1,page number:183"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "inform=\"Thiagaragar\"\n",
+      "numb=int(input(\"No. Of Char To Print \"))\n",
+      "print 'print format = %.0',numb,'s'\n",
+      "print inform[0:numb]"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "No. Of Char To Print 6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "print format = %.0 6 s\n",
+        "Thiaga\n"
+       ]
+      }
+     ],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.5.1,page number:183"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "array1='Thiagarajar Engg'\n",
+      "array2=(array1 + '.')[:-1]\n",
+      "print \"array1 = \",array1\n",
+      "print \"array2 = \",array2"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "array1 =  Thiagarajar Engg\n",
+        "array2 =  Thiagarajar Engg\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.6.1,page number:184"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "userInput = raw_input(\"Enter Int: \")\n",
+      "if userInput.isdigit():\n",
+      "    print \"Number = \"+userInput\n",
+      "else:\n",
+      "    print userInput,\"is not int type\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Int: 8\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Number = 8\n"
+       ]
+      }
+     ],
+     "prompt_number": 7
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.7.1,page number:186"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "first=\"Thiagrajar\"\n",
+      "second=first+\" Engg.\"\n",
+      "\n",
+      "print \"first = \",first\n",
+      "print \"second = \",second"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "first =  Thiagrajar\n",
+        "second =  Thiagrajar Engg.\n"
+       ]
+      }
+     ],
+     "prompt_number": 8
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.8.1,page number:187"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "string1 = \"Hello\"\n",
+      "print \"len of str is\",len(string1)\n",
+      "string2 = \" There\"\n",
+      "print \"string1+string2 is\",string1+string2"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        " len of str is 5\n",
+        "string1+string2 is Hello There\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.12.1, page number:189"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "i=20\n",
+      "size=0\n",
+      "str1 =[]\n",
+      "str2=[]\n",
+      "def readSize():\n",
+      "    global size\n",
+      "    size=int(input(\"Enter number of strings : \"))\n",
+      "    if size<1 or size>i :\n",
+      "        readSize()\n",
+      "    return\n",
+      "def readArray():\n",
+      "    global size\n",
+      "    global str1\n",
+      "    print \"Enter the Strings..\"\n",
+      "    for k in range(0,size):\n",
+      "        m=raw_input()\n",
+      "        str1.append(m)\n",
+      "    return\n",
+      "def displayArray1():\n",
+      "    for index in range(0,size):\n",
+      "        print str1[index]\n",
+      "    return\n",
+      "def displayArray2():\n",
+      "    for index in range(0,size):\n",
+      "        print str2[index]\n",
+      "    return\n",
+      "def sortedArray():\n",
+      "    global str1\n",
+      "    global str2\n",
+      "    str2= sorted(str1)\n",
+      "    return\n",
+      "\n",
+      "readSize()\n",
+      "readArray()\n",
+      "print \"The unsorted array is..\"\n",
+      "displayArray1()\n",
+      "sortedArray()\n",
+      "print \"The sorted array is..\"\n",
+      "displayArray2()"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter number of strings : 6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the Strings..\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "computer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "page\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "diskette\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "eprom\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "binary\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "random\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The unsorted array is..\n",
+        "computer\n",
+        "page\n",
+        "diskette\n",
+        "eprom\n",
+        "binary\n",
+        "random\n",
+        "The sorted array is..\n",
+        "binary\n",
+        "computer\n",
+        "diskette\n",
+        "eprom\n",
+        "page\n",
+        "random\n"
+       ]
+      }
+     ],
+     "prompt_number": 9
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11_8.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11_8.ipynb
new file mode 100755
index 00000000..a7a687c2
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11_8.ipynb
@@ -0,0 +1,404 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:92c507d5a01a7a0413aaf810859ecb2e4626113fce440f0c32977c3febad1c75"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "11:HANDLING OF CHARACTER STRINGS"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.2.1, page number:180"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "inform=['m','a','d','u','r','a','i']\n",
+      "print \"\".join(inform)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "madurai\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.3.1,page number:182"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "inform=\"Thiagaragar\"\n",
+      "numb=int(input(\"No. Of Char To Print \"))\n",
+      "print 'print format = %.0',numb,'s'\n",
+      "print inform[0:numb]"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "No. Of Char To Print 6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "print format = %.0 6 s\n",
+        "Thiaga\n"
+       ]
+      }
+     ],
+     "prompt_number": 4
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.4.1,page number:183"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "inform=\"Thiagaragar\"\n",
+      "numb=int(input(\"No. Of Char To Print \"))\n",
+      "print 'print format = %.0',numb,'s'\n",
+      "print inform[0:numb]"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "No. Of Char To Print 6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "print format = %.0 6 s\n",
+        "Thiaga\n"
+       ]
+      }
+     ],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.5.1,page number:183"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "array1='Thiagarajar Engg'\n",
+      "array2=(array1 + '.')[:-1]\n",
+      "print \"array1 = \",array1\n",
+      "print \"array2 = \",array2"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "array1 =  Thiagarajar Engg\n",
+        "array2 =  Thiagarajar Engg\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.6.1,page number:184"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "userInput = raw_input(\"Enter Int: \")\n",
+      "if userInput.isdigit():\n",
+      "    print \"Number = \"+userInput\n",
+      "else:\n",
+      "    print userInput,\"is not int type\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Int: 8\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Number = 8\n"
+       ]
+      }
+     ],
+     "prompt_number": 7
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.7.1,page number:186"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "first=\"Thiagrajar\"\n",
+      "second=first+\" Engg.\"\n",
+      "\n",
+      "print \"first = \",first\n",
+      "print \"second = \",second"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "first =  Thiagrajar\n",
+        "second =  Thiagrajar Engg.\n"
+       ]
+      }
+     ],
+     "prompt_number": 8
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.8.1,page number:187"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "string1 = \"Hello\"\n",
+      "print \"len of str is\",len(string1)\n",
+      "string2 = \" There\"\n",
+      "print \"string1+string2 is\",string1+string2"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        " len of str is 5\n",
+        "string1+string2 is Hello There\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.12.1, page number:189"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "i=20\n",
+      "size=0\n",
+      "str1 =[]\n",
+      "str2=[]\n",
+      "def readSize():\n",
+      "    global size\n",
+      "    size=int(input(\"Enter number of strings : \"))\n",
+      "    if size<1 or size>i :\n",
+      "        readSize()\n",
+      "    return\n",
+      "def readArray():\n",
+      "    global size\n",
+      "    global str1\n",
+      "    print \"Enter the Strings..\"\n",
+      "    for k in range(0,size):\n",
+      "        m=raw_input()\n",
+      "        str1.append(m)\n",
+      "    return\n",
+      "def displayArray1():\n",
+      "    for index in range(0,size):\n",
+      "        print str1[index]\n",
+      "    return\n",
+      "def displayArray2():\n",
+      "    for index in range(0,size):\n",
+      "        print str2[index]\n",
+      "    return\n",
+      "def sortedArray():\n",
+      "    global str1\n",
+      "    global str2\n",
+      "    str2= sorted(str1)\n",
+      "    return\n",
+      "\n",
+      "readSize()\n",
+      "readArray()\n",
+      "print \"The unsorted array is..\"\n",
+      "displayArray1()\n",
+      "sortedArray()\n",
+      "print \"The sorted array is..\"\n",
+      "displayArray2()"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter number of strings : 6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the Strings..\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "computer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "page\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "diskette\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "eprom\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "binary\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "random\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The unsorted array is..\n",
+        "computer\n",
+        "page\n",
+        "diskette\n",
+        "eprom\n",
+        "binary\n",
+        "random\n",
+        "The sorted array is..\n",
+        "binary\n",
+        "computer\n",
+        "diskette\n",
+        "eprom\n",
+        "page\n",
+        "random\n"
+       ]
+      }
+     ],
+     "prompt_number": 9
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11_9.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11_9.ipynb
new file mode 100755
index 00000000..a7a687c2
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11_9.ipynb
@@ -0,0 +1,404 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:92c507d5a01a7a0413aaf810859ecb2e4626113fce440f0c32977c3febad1c75"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "11:HANDLING OF CHARACTER STRINGS"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.2.1, page number:180"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "inform=['m','a','d','u','r','a','i']\n",
+      "print \"\".join(inform)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "madurai\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.3.1,page number:182"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "inform=\"Thiagaragar\"\n",
+      "numb=int(input(\"No. Of Char To Print \"))\n",
+      "print 'print format = %.0',numb,'s'\n",
+      "print inform[0:numb]"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "No. Of Char To Print 6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "print format = %.0 6 s\n",
+        "Thiaga\n"
+       ]
+      }
+     ],
+     "prompt_number": 4
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.4.1,page number:183"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "inform=\"Thiagaragar\"\n",
+      "numb=int(input(\"No. Of Char To Print \"))\n",
+      "print 'print format = %.0',numb,'s'\n",
+      "print inform[0:numb]"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "No. Of Char To Print 6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "print format = %.0 6 s\n",
+        "Thiaga\n"
+       ]
+      }
+     ],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.5.1,page number:183"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "array1='Thiagarajar Engg'\n",
+      "array2=(array1 + '.')[:-1]\n",
+      "print \"array1 = \",array1\n",
+      "print \"array2 = \",array2"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "array1 =  Thiagarajar Engg\n",
+        "array2 =  Thiagarajar Engg\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.6.1,page number:184"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "userInput = raw_input(\"Enter Int: \")\n",
+      "if userInput.isdigit():\n",
+      "    print \"Number = \"+userInput\n",
+      "else:\n",
+      "    print userInput,\"is not int type\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Int: 8\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Number = 8\n"
+       ]
+      }
+     ],
+     "prompt_number": 7
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.7.1,page number:186"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "first=\"Thiagrajar\"\n",
+      "second=first+\" Engg.\"\n",
+      "\n",
+      "print \"first = \",first\n",
+      "print \"second = \",second"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "first =  Thiagrajar\n",
+        "second =  Thiagrajar Engg.\n"
+       ]
+      }
+     ],
+     "prompt_number": 8
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.8.1,page number:187"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "string1 = \"Hello\"\n",
+      "print \"len of str is\",len(string1)\n",
+      "string2 = \" There\"\n",
+      "print \"string1+string2 is\",string1+string2"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        " len of str is 5\n",
+        "string1+string2 is Hello There\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "11.12.1, page number:189"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "i=20\n",
+      "size=0\n",
+      "str1 =[]\n",
+      "str2=[]\n",
+      "def readSize():\n",
+      "    global size\n",
+      "    size=int(input(\"Enter number of strings : \"))\n",
+      "    if size<1 or size>i :\n",
+      "        readSize()\n",
+      "    return\n",
+      "def readArray():\n",
+      "    global size\n",
+      "    global str1\n",
+      "    print \"Enter the Strings..\"\n",
+      "    for k in range(0,size):\n",
+      "        m=raw_input()\n",
+      "        str1.append(m)\n",
+      "    return\n",
+      "def displayArray1():\n",
+      "    for index in range(0,size):\n",
+      "        print str1[index]\n",
+      "    return\n",
+      "def displayArray2():\n",
+      "    for index in range(0,size):\n",
+      "        print str2[index]\n",
+      "    return\n",
+      "def sortedArray():\n",
+      "    global str1\n",
+      "    global str2\n",
+      "    str2= sorted(str1)\n",
+      "    return\n",
+      "\n",
+      "readSize()\n",
+      "readArray()\n",
+      "print \"The unsorted array is..\"\n",
+      "displayArray1()\n",
+      "sortedArray()\n",
+      "print \"The sorted array is..\"\n",
+      "displayArray2()"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter number of strings : 6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the Strings..\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "computer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "page\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "diskette\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "eprom\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "binary\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "random\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The unsorted array is..\n",
+        "computer\n",
+        "page\n",
+        "diskette\n",
+        "eprom\n",
+        "binary\n",
+        "random\n",
+        "The sorted array is..\n",
+        "binary\n",
+        "computer\n",
+        "diskette\n",
+        "eprom\n",
+        "page\n",
+        "random\n"
+       ]
+      }
+     ],
+     "prompt_number": 9
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter12.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter12.ipynb
new file mode 100755
index 00000000..f5e720e1
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter12.ipynb
@@ -0,0 +1,436 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:fddb630ff591f8acea671441a1ef2200894f84585416ff0fca0f361802a87050"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "12:USER DEFINED FUNCTIONS"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.4.1, page number:194"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def get_a_value():\n",
+      "    return float(input())\n",
+      "print \"Enter the Length..\"\n",
+      "leng=get_a_value()\n",
+      "print \"Enter the Width..\"\n",
+      "width=get_a_value()\n",
+      "print \"Area = \",leng*width"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the Length..\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "16.8\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the Width..\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "43.7\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Area =  734.16\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.5.1, page number:195"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def change_index():\n",
+      "    index=5\n",
+      "index=3\n",
+      "print \"index = \",index\n",
+      "change_index()\n",
+      "print \"index = \",index"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "index =  3\n",
+        "index =  3\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.5.2, page number:196"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def get_a_value():\n",
+      "    return float(input())\n",
+      "def calc_area():\n",
+      "    global leng,width\n",
+      "    return leng*width\n",
+      "print \"Enter the Length..\"\n",
+      "leng=get_a_value()\n",
+      "print \"Enter the Width..\"\n",
+      "width=get_a_value()\n",
+      "print \"Area = \",calc_area()\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the Length..\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "12.5\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the Width..\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "23.7\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Area =  296.25\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.6.1, page number:197"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def print_value(k):\n",
+      "    print k\n",
+      "numb=5\n",
+      "print \"Value of Expression : \",\n",
+      "print_value(numb*3+2)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Value of Expression :  17\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.7.1, page number:198"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def TOL():\n",
+      "    return 0.0001\n",
+      "def sqrt(n):\n",
+      "    if n>0.0:\n",
+      "        guess=0.0\n",
+      "        guess=n/2.0\n",
+      "        while True:\n",
+      "            if ((guess*guess-n) > TOL()) or ((guess*guess-n) < -TOL()):\n",
+      "                temp=guess+n/guess\n",
+      "                guess=temp/2.0\n",
+      "            else:\n",
+      "                break\n",
+      "        return guess\n",
+      "    else:\n",
+      "        return -1.0\n",
+      "            \n",
+      "numb=float(input(\"Enter number..\"))\n",
+      "print \"Square Root of\",numb,\"is\",sqrt(numb)\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter number..17.1\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Square Root of 17.1 is 4.13521500873\n"
+       ]
+      }
+     ],
+     "prompt_number": 4
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.8.1, page number:198"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "year=0\n",
+      "def leap(n):\n",
+      "    return (n%4 == 0)and(n%100 != 0)or(n%400 == 0)\n",
+      "year=int(input(\"Enter Year..\"))\n",
+      "if leap(year):\n",
+      "    print year,\"is leap year\"\n",
+      "else:\n",
+      "    print year,\"is not leap year\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Year..1984\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1984 is leap year\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.9.1, page number:199"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def input_value():\n",
+      "    return input()\n",
+      "def area(l,w):\n",
+      "    return l*w\n",
+      "print \"Length = \"\n",
+      "length=input_value();\n",
+      "print \"Width = \"\n",
+      "width=input_value();\n",
+      "print \"Area = \",area(length,width)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Length = \n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "12.5\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Width = \n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "23.7\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Area =  296.25\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.9.2, page number:200"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "value=1\n",
+      "def power(n,e):\n",
+      "    global value\n",
+      "    if(e<0):\n",
+      "        return 0\n",
+      "    for index in range(0,e):\n",
+      "        if(index < e):\n",
+      "            value*=n\n",
+      "            index+=1\n",
+      "    return value\n",
+      "            \n",
+      "number=int(input(\"Enter Integer...\"))\n",
+      "exponent=int(input(\"Enter Exponent...\"))\n",
+      "while True:\n",
+      "    if (exponent<0):\n",
+      "        exponent=input(\"Enter a Non-Negative Integer :\")\n",
+      "    else:\n",
+      "        break\n",
+      "print number,\"raised to \",exponent,\" = \",power(number,exponent)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer...4\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Exponent...2\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "4 raised to  2  =  16\n"
+       ]
+      }
+     ],
+     "prompt_number": 7
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter12_1.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter12_1.ipynb
new file mode 100755
index 00000000..f5e720e1
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter12_1.ipynb
@@ -0,0 +1,436 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:fddb630ff591f8acea671441a1ef2200894f84585416ff0fca0f361802a87050"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "12:USER DEFINED FUNCTIONS"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.4.1, page number:194"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def get_a_value():\n",
+      "    return float(input())\n",
+      "print \"Enter the Length..\"\n",
+      "leng=get_a_value()\n",
+      "print \"Enter the Width..\"\n",
+      "width=get_a_value()\n",
+      "print \"Area = \",leng*width"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the Length..\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "16.8\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the Width..\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "43.7\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Area =  734.16\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.5.1, page number:195"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def change_index():\n",
+      "    index=5\n",
+      "index=3\n",
+      "print \"index = \",index\n",
+      "change_index()\n",
+      "print \"index = \",index"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "index =  3\n",
+        "index =  3\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.5.2, page number:196"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def get_a_value():\n",
+      "    return float(input())\n",
+      "def calc_area():\n",
+      "    global leng,width\n",
+      "    return leng*width\n",
+      "print \"Enter the Length..\"\n",
+      "leng=get_a_value()\n",
+      "print \"Enter the Width..\"\n",
+      "width=get_a_value()\n",
+      "print \"Area = \",calc_area()\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the Length..\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "12.5\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the Width..\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "23.7\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Area =  296.25\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.6.1, page number:197"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def print_value(k):\n",
+      "    print k\n",
+      "numb=5\n",
+      "print \"Value of Expression : \",\n",
+      "print_value(numb*3+2)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Value of Expression :  17\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.7.1, page number:198"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def TOL():\n",
+      "    return 0.0001\n",
+      "def sqrt(n):\n",
+      "    if n>0.0:\n",
+      "        guess=0.0\n",
+      "        guess=n/2.0\n",
+      "        while True:\n",
+      "            if ((guess*guess-n) > TOL()) or ((guess*guess-n) < -TOL()):\n",
+      "                temp=guess+n/guess\n",
+      "                guess=temp/2.0\n",
+      "            else:\n",
+      "                break\n",
+      "        return guess\n",
+      "    else:\n",
+      "        return -1.0\n",
+      "            \n",
+      "numb=float(input(\"Enter number..\"))\n",
+      "print \"Square Root of\",numb,\"is\",sqrt(numb)\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter number..17.1\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Square Root of 17.1 is 4.13521500873\n"
+       ]
+      }
+     ],
+     "prompt_number": 4
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.8.1, page number:198"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "year=0\n",
+      "def leap(n):\n",
+      "    return (n%4 == 0)and(n%100 != 0)or(n%400 == 0)\n",
+      "year=int(input(\"Enter Year..\"))\n",
+      "if leap(year):\n",
+      "    print year,\"is leap year\"\n",
+      "else:\n",
+      "    print year,\"is not leap year\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Year..1984\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1984 is leap year\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.9.1, page number:199"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def input_value():\n",
+      "    return input()\n",
+      "def area(l,w):\n",
+      "    return l*w\n",
+      "print \"Length = \"\n",
+      "length=input_value();\n",
+      "print \"Width = \"\n",
+      "width=input_value();\n",
+      "print \"Area = \",area(length,width)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Length = \n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "12.5\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Width = \n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "23.7\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Area =  296.25\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.9.2, page number:200"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "value=1\n",
+      "def power(n,e):\n",
+      "    global value\n",
+      "    if(e<0):\n",
+      "        return 0\n",
+      "    for index in range(0,e):\n",
+      "        if(index < e):\n",
+      "            value*=n\n",
+      "            index+=1\n",
+      "    return value\n",
+      "            \n",
+      "number=int(input(\"Enter Integer...\"))\n",
+      "exponent=int(input(\"Enter Exponent...\"))\n",
+      "while True:\n",
+      "    if (exponent<0):\n",
+      "        exponent=input(\"Enter a Non-Negative Integer :\")\n",
+      "    else:\n",
+      "        break\n",
+      "print number,\"raised to \",exponent,\" = \",power(number,exponent)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer...4\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Exponent...2\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "4 raised to  2  =  16\n"
+       ]
+      }
+     ],
+     "prompt_number": 7
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter12_10.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter12_10.ipynb
new file mode 100755
index 00000000..f5e720e1
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter12_10.ipynb
@@ -0,0 +1,436 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:fddb630ff591f8acea671441a1ef2200894f84585416ff0fca0f361802a87050"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "12:USER DEFINED FUNCTIONS"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.4.1, page number:194"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def get_a_value():\n",
+      "    return float(input())\n",
+      "print \"Enter the Length..\"\n",
+      "leng=get_a_value()\n",
+      "print \"Enter the Width..\"\n",
+      "width=get_a_value()\n",
+      "print \"Area = \",leng*width"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the Length..\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "16.8\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the Width..\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "43.7\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Area =  734.16\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.5.1, page number:195"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def change_index():\n",
+      "    index=5\n",
+      "index=3\n",
+      "print \"index = \",index\n",
+      "change_index()\n",
+      "print \"index = \",index"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "index =  3\n",
+        "index =  3\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.5.2, page number:196"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def get_a_value():\n",
+      "    return float(input())\n",
+      "def calc_area():\n",
+      "    global leng,width\n",
+      "    return leng*width\n",
+      "print \"Enter the Length..\"\n",
+      "leng=get_a_value()\n",
+      "print \"Enter the Width..\"\n",
+      "width=get_a_value()\n",
+      "print \"Area = \",calc_area()\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the Length..\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "12.5\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the Width..\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "23.7\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Area =  296.25\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.6.1, page number:197"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def print_value(k):\n",
+      "    print k\n",
+      "numb=5\n",
+      "print \"Value of Expression : \",\n",
+      "print_value(numb*3+2)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Value of Expression :  17\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.7.1, page number:198"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def TOL():\n",
+      "    return 0.0001\n",
+      "def sqrt(n):\n",
+      "    if n>0.0:\n",
+      "        guess=0.0\n",
+      "        guess=n/2.0\n",
+      "        while True:\n",
+      "            if ((guess*guess-n) > TOL()) or ((guess*guess-n) < -TOL()):\n",
+      "                temp=guess+n/guess\n",
+      "                guess=temp/2.0\n",
+      "            else:\n",
+      "                break\n",
+      "        return guess\n",
+      "    else:\n",
+      "        return -1.0\n",
+      "            \n",
+      "numb=float(input(\"Enter number..\"))\n",
+      "print \"Square Root of\",numb,\"is\",sqrt(numb)\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter number..17.1\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Square Root of 17.1 is 4.13521500873\n"
+       ]
+      }
+     ],
+     "prompt_number": 4
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.8.1, page number:198"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "year=0\n",
+      "def leap(n):\n",
+      "    return (n%4 == 0)and(n%100 != 0)or(n%400 == 0)\n",
+      "year=int(input(\"Enter Year..\"))\n",
+      "if leap(year):\n",
+      "    print year,\"is leap year\"\n",
+      "else:\n",
+      "    print year,\"is not leap year\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Year..1984\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1984 is leap year\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.9.1, page number:199"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def input_value():\n",
+      "    return input()\n",
+      "def area(l,w):\n",
+      "    return l*w\n",
+      "print \"Length = \"\n",
+      "length=input_value();\n",
+      "print \"Width = \"\n",
+      "width=input_value();\n",
+      "print \"Area = \",area(length,width)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Length = \n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "12.5\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Width = \n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "23.7\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Area =  296.25\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.9.2, page number:200"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "value=1\n",
+      "def power(n,e):\n",
+      "    global value\n",
+      "    if(e<0):\n",
+      "        return 0\n",
+      "    for index in range(0,e):\n",
+      "        if(index < e):\n",
+      "            value*=n\n",
+      "            index+=1\n",
+      "    return value\n",
+      "            \n",
+      "number=int(input(\"Enter Integer...\"))\n",
+      "exponent=int(input(\"Enter Exponent...\"))\n",
+      "while True:\n",
+      "    if (exponent<0):\n",
+      "        exponent=input(\"Enter a Non-Negative Integer :\")\n",
+      "    else:\n",
+      "        break\n",
+      "print number,\"raised to \",exponent,\" = \",power(number,exponent)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer...4\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Exponent...2\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "4 raised to  2  =  16\n"
+       ]
+      }
+     ],
+     "prompt_number": 7
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter12_11.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter12_11.ipynb
new file mode 100755
index 00000000..f5e720e1
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter12_11.ipynb
@@ -0,0 +1,436 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:fddb630ff591f8acea671441a1ef2200894f84585416ff0fca0f361802a87050"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "12:USER DEFINED FUNCTIONS"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.4.1, page number:194"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def get_a_value():\n",
+      "    return float(input())\n",
+      "print \"Enter the Length..\"\n",
+      "leng=get_a_value()\n",
+      "print \"Enter the Width..\"\n",
+      "width=get_a_value()\n",
+      "print \"Area = \",leng*width"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the Length..\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "16.8\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the Width..\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "43.7\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Area =  734.16\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.5.1, page number:195"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def change_index():\n",
+      "    index=5\n",
+      "index=3\n",
+      "print \"index = \",index\n",
+      "change_index()\n",
+      "print \"index = \",index"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "index =  3\n",
+        "index =  3\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.5.2, page number:196"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def get_a_value():\n",
+      "    return float(input())\n",
+      "def calc_area():\n",
+      "    global leng,width\n",
+      "    return leng*width\n",
+      "print \"Enter the Length..\"\n",
+      "leng=get_a_value()\n",
+      "print \"Enter the Width..\"\n",
+      "width=get_a_value()\n",
+      "print \"Area = \",calc_area()\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the Length..\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "12.5\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the Width..\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "23.7\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Area =  296.25\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.6.1, page number:197"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def print_value(k):\n",
+      "    print k\n",
+      "numb=5\n",
+      "print \"Value of Expression : \",\n",
+      "print_value(numb*3+2)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Value of Expression :  17\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.7.1, page number:198"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def TOL():\n",
+      "    return 0.0001\n",
+      "def sqrt(n):\n",
+      "    if n>0.0:\n",
+      "        guess=0.0\n",
+      "        guess=n/2.0\n",
+      "        while True:\n",
+      "            if ((guess*guess-n) > TOL()) or ((guess*guess-n) < -TOL()):\n",
+      "                temp=guess+n/guess\n",
+      "                guess=temp/2.0\n",
+      "            else:\n",
+      "                break\n",
+      "        return guess\n",
+      "    else:\n",
+      "        return -1.0\n",
+      "            \n",
+      "numb=float(input(\"Enter number..\"))\n",
+      "print \"Square Root of\",numb,\"is\",sqrt(numb)\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter number..17.1\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Square Root of 17.1 is 4.13521500873\n"
+       ]
+      }
+     ],
+     "prompt_number": 4
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.8.1, page number:198"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "year=0\n",
+      "def leap(n):\n",
+      "    return (n%4 == 0)and(n%100 != 0)or(n%400 == 0)\n",
+      "year=int(input(\"Enter Year..\"))\n",
+      "if leap(year):\n",
+      "    print year,\"is leap year\"\n",
+      "else:\n",
+      "    print year,\"is not leap year\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Year..1984\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1984 is leap year\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.9.1, page number:199"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def input_value():\n",
+      "    return input()\n",
+      "def area(l,w):\n",
+      "    return l*w\n",
+      "print \"Length = \"\n",
+      "length=input_value();\n",
+      "print \"Width = \"\n",
+      "width=input_value();\n",
+      "print \"Area = \",area(length,width)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Length = \n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "12.5\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Width = \n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "23.7\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Area =  296.25\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.9.2, page number:200"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "value=1\n",
+      "def power(n,e):\n",
+      "    global value\n",
+      "    if(e<0):\n",
+      "        return 0\n",
+      "    for index in range(0,e):\n",
+      "        if(index < e):\n",
+      "            value*=n\n",
+      "            index+=1\n",
+      "    return value\n",
+      "            \n",
+      "number=int(input(\"Enter Integer...\"))\n",
+      "exponent=int(input(\"Enter Exponent...\"))\n",
+      "while True:\n",
+      "    if (exponent<0):\n",
+      "        exponent=input(\"Enter a Non-Negative Integer :\")\n",
+      "    else:\n",
+      "        break\n",
+      "print number,\"raised to \",exponent,\" = \",power(number,exponent)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer...4\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Exponent...2\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "4 raised to  2  =  16\n"
+       ]
+      }
+     ],
+     "prompt_number": 7
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter12_12.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter12_12.ipynb
new file mode 100755
index 00000000..f5e720e1
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter12_12.ipynb
@@ -0,0 +1,436 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:fddb630ff591f8acea671441a1ef2200894f84585416ff0fca0f361802a87050"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "12:USER DEFINED FUNCTIONS"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.4.1, page number:194"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def get_a_value():\n",
+      "    return float(input())\n",
+      "print \"Enter the Length..\"\n",
+      "leng=get_a_value()\n",
+      "print \"Enter the Width..\"\n",
+      "width=get_a_value()\n",
+      "print \"Area = \",leng*width"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the Length..\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "16.8\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the Width..\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "43.7\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Area =  734.16\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.5.1, page number:195"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def change_index():\n",
+      "    index=5\n",
+      "index=3\n",
+      "print \"index = \",index\n",
+      "change_index()\n",
+      "print \"index = \",index"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "index =  3\n",
+        "index =  3\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.5.2, page number:196"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def get_a_value():\n",
+      "    return float(input())\n",
+      "def calc_area():\n",
+      "    global leng,width\n",
+      "    return leng*width\n",
+      "print \"Enter the Length..\"\n",
+      "leng=get_a_value()\n",
+      "print \"Enter the Width..\"\n",
+      "width=get_a_value()\n",
+      "print \"Area = \",calc_area()\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the Length..\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "12.5\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the Width..\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "23.7\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Area =  296.25\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.6.1, page number:197"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def print_value(k):\n",
+      "    print k\n",
+      "numb=5\n",
+      "print \"Value of Expression : \",\n",
+      "print_value(numb*3+2)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Value of Expression :  17\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.7.1, page number:198"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def TOL():\n",
+      "    return 0.0001\n",
+      "def sqrt(n):\n",
+      "    if n>0.0:\n",
+      "        guess=0.0\n",
+      "        guess=n/2.0\n",
+      "        while True:\n",
+      "            if ((guess*guess-n) > TOL()) or ((guess*guess-n) < -TOL()):\n",
+      "                temp=guess+n/guess\n",
+      "                guess=temp/2.0\n",
+      "            else:\n",
+      "                break\n",
+      "        return guess\n",
+      "    else:\n",
+      "        return -1.0\n",
+      "            \n",
+      "numb=float(input(\"Enter number..\"))\n",
+      "print \"Square Root of\",numb,\"is\",sqrt(numb)\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter number..17.1\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Square Root of 17.1 is 4.13521500873\n"
+       ]
+      }
+     ],
+     "prompt_number": 4
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.8.1, page number:198"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "year=0\n",
+      "def leap(n):\n",
+      "    return (n%4 == 0)and(n%100 != 0)or(n%400 == 0)\n",
+      "year=int(input(\"Enter Year..\"))\n",
+      "if leap(year):\n",
+      "    print year,\"is leap year\"\n",
+      "else:\n",
+      "    print year,\"is not leap year\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Year..1984\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1984 is leap year\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.9.1, page number:199"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def input_value():\n",
+      "    return input()\n",
+      "def area(l,w):\n",
+      "    return l*w\n",
+      "print \"Length = \"\n",
+      "length=input_value();\n",
+      "print \"Width = \"\n",
+      "width=input_value();\n",
+      "print \"Area = \",area(length,width)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Length = \n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "12.5\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Width = \n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "23.7\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Area =  296.25\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.9.2, page number:200"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "value=1\n",
+      "def power(n,e):\n",
+      "    global value\n",
+      "    if(e<0):\n",
+      "        return 0\n",
+      "    for index in range(0,e):\n",
+      "        if(index < e):\n",
+      "            value*=n\n",
+      "            index+=1\n",
+      "    return value\n",
+      "            \n",
+      "number=int(input(\"Enter Integer...\"))\n",
+      "exponent=int(input(\"Enter Exponent...\"))\n",
+      "while True:\n",
+      "    if (exponent<0):\n",
+      "        exponent=input(\"Enter a Non-Negative Integer :\")\n",
+      "    else:\n",
+      "        break\n",
+      "print number,\"raised to \",exponent,\" = \",power(number,exponent)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer...4\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Exponent...2\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "4 raised to  2  =  16\n"
+       ]
+      }
+     ],
+     "prompt_number": 7
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter12_13.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter12_13.ipynb
new file mode 100755
index 00000000..f5e720e1
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter12_13.ipynb
@@ -0,0 +1,436 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:fddb630ff591f8acea671441a1ef2200894f84585416ff0fca0f361802a87050"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "12:USER DEFINED FUNCTIONS"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.4.1, page number:194"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def get_a_value():\n",
+      "    return float(input())\n",
+      "print \"Enter the Length..\"\n",
+      "leng=get_a_value()\n",
+      "print \"Enter the Width..\"\n",
+      "width=get_a_value()\n",
+      "print \"Area = \",leng*width"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the Length..\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "16.8\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the Width..\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "43.7\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Area =  734.16\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.5.1, page number:195"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def change_index():\n",
+      "    index=5\n",
+      "index=3\n",
+      "print \"index = \",index\n",
+      "change_index()\n",
+      "print \"index = \",index"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "index =  3\n",
+        "index =  3\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.5.2, page number:196"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def get_a_value():\n",
+      "    return float(input())\n",
+      "def calc_area():\n",
+      "    global leng,width\n",
+      "    return leng*width\n",
+      "print \"Enter the Length..\"\n",
+      "leng=get_a_value()\n",
+      "print \"Enter the Width..\"\n",
+      "width=get_a_value()\n",
+      "print \"Area = \",calc_area()\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the Length..\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "12.5\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the Width..\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "23.7\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Area =  296.25\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.6.1, page number:197"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def print_value(k):\n",
+      "    print k\n",
+      "numb=5\n",
+      "print \"Value of Expression : \",\n",
+      "print_value(numb*3+2)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Value of Expression :  17\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.7.1, page number:198"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def TOL():\n",
+      "    return 0.0001\n",
+      "def sqrt(n):\n",
+      "    if n>0.0:\n",
+      "        guess=0.0\n",
+      "        guess=n/2.0\n",
+      "        while True:\n",
+      "            if ((guess*guess-n) > TOL()) or ((guess*guess-n) < -TOL()):\n",
+      "                temp=guess+n/guess\n",
+      "                guess=temp/2.0\n",
+      "            else:\n",
+      "                break\n",
+      "        return guess\n",
+      "    else:\n",
+      "        return -1.0\n",
+      "            \n",
+      "numb=float(input(\"Enter number..\"))\n",
+      "print \"Square Root of\",numb,\"is\",sqrt(numb)\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter number..17.1\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Square Root of 17.1 is 4.13521500873\n"
+       ]
+      }
+     ],
+     "prompt_number": 4
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.8.1, page number:198"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "year=0\n",
+      "def leap(n):\n",
+      "    return (n%4 == 0)and(n%100 != 0)or(n%400 == 0)\n",
+      "year=int(input(\"Enter Year..\"))\n",
+      "if leap(year):\n",
+      "    print year,\"is leap year\"\n",
+      "else:\n",
+      "    print year,\"is not leap year\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Year..1984\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1984 is leap year\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.9.1, page number:199"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def input_value():\n",
+      "    return input()\n",
+      "def area(l,w):\n",
+      "    return l*w\n",
+      "print \"Length = \"\n",
+      "length=input_value();\n",
+      "print \"Width = \"\n",
+      "width=input_value();\n",
+      "print \"Area = \",area(length,width)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Length = \n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "12.5\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Width = \n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "23.7\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Area =  296.25\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.9.2, page number:200"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "value=1\n",
+      "def power(n,e):\n",
+      "    global value\n",
+      "    if(e<0):\n",
+      "        return 0\n",
+      "    for index in range(0,e):\n",
+      "        if(index < e):\n",
+      "            value*=n\n",
+      "            index+=1\n",
+      "    return value\n",
+      "            \n",
+      "number=int(input(\"Enter Integer...\"))\n",
+      "exponent=int(input(\"Enter Exponent...\"))\n",
+      "while True:\n",
+      "    if (exponent<0):\n",
+      "        exponent=input(\"Enter a Non-Negative Integer :\")\n",
+      "    else:\n",
+      "        break\n",
+      "print number,\"raised to \",exponent,\" = \",power(number,exponent)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer...4\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Exponent...2\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "4 raised to  2  =  16\n"
+       ]
+      }
+     ],
+     "prompt_number": 7
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter12_14.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter12_14.ipynb
new file mode 100755
index 00000000..f5e720e1
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter12_14.ipynb
@@ -0,0 +1,436 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:fddb630ff591f8acea671441a1ef2200894f84585416ff0fca0f361802a87050"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "12:USER DEFINED FUNCTIONS"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.4.1, page number:194"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def get_a_value():\n",
+      "    return float(input())\n",
+      "print \"Enter the Length..\"\n",
+      "leng=get_a_value()\n",
+      "print \"Enter the Width..\"\n",
+      "width=get_a_value()\n",
+      "print \"Area = \",leng*width"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the Length..\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "16.8\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the Width..\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "43.7\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Area =  734.16\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.5.1, page number:195"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def change_index():\n",
+      "    index=5\n",
+      "index=3\n",
+      "print \"index = \",index\n",
+      "change_index()\n",
+      "print \"index = \",index"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "index =  3\n",
+        "index =  3\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.5.2, page number:196"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def get_a_value():\n",
+      "    return float(input())\n",
+      "def calc_area():\n",
+      "    global leng,width\n",
+      "    return leng*width\n",
+      "print \"Enter the Length..\"\n",
+      "leng=get_a_value()\n",
+      "print \"Enter the Width..\"\n",
+      "width=get_a_value()\n",
+      "print \"Area = \",calc_area()\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the Length..\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "12.5\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the Width..\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "23.7\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Area =  296.25\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.6.1, page number:197"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def print_value(k):\n",
+      "    print k\n",
+      "numb=5\n",
+      "print \"Value of Expression : \",\n",
+      "print_value(numb*3+2)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Value of Expression :  17\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.7.1, page number:198"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def TOL():\n",
+      "    return 0.0001\n",
+      "def sqrt(n):\n",
+      "    if n>0.0:\n",
+      "        guess=0.0\n",
+      "        guess=n/2.0\n",
+      "        while True:\n",
+      "            if ((guess*guess-n) > TOL()) or ((guess*guess-n) < -TOL()):\n",
+      "                temp=guess+n/guess\n",
+      "                guess=temp/2.0\n",
+      "            else:\n",
+      "                break\n",
+      "        return guess\n",
+      "    else:\n",
+      "        return -1.0\n",
+      "            \n",
+      "numb=float(input(\"Enter number..\"))\n",
+      "print \"Square Root of\",numb,\"is\",sqrt(numb)\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter number..17.1\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Square Root of 17.1 is 4.13521500873\n"
+       ]
+      }
+     ],
+     "prompt_number": 4
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.8.1, page number:198"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "year=0\n",
+      "def leap(n):\n",
+      "    return (n%4 == 0)and(n%100 != 0)or(n%400 == 0)\n",
+      "year=int(input(\"Enter Year..\"))\n",
+      "if leap(year):\n",
+      "    print year,\"is leap year\"\n",
+      "else:\n",
+      "    print year,\"is not leap year\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Year..1984\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1984 is leap year\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.9.1, page number:199"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def input_value():\n",
+      "    return input()\n",
+      "def area(l,w):\n",
+      "    return l*w\n",
+      "print \"Length = \"\n",
+      "length=input_value();\n",
+      "print \"Width = \"\n",
+      "width=input_value();\n",
+      "print \"Area = \",area(length,width)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Length = \n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "12.5\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Width = \n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "23.7\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Area =  296.25\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.9.2, page number:200"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "value=1\n",
+      "def power(n,e):\n",
+      "    global value\n",
+      "    if(e<0):\n",
+      "        return 0\n",
+      "    for index in range(0,e):\n",
+      "        if(index < e):\n",
+      "            value*=n\n",
+      "            index+=1\n",
+      "    return value\n",
+      "            \n",
+      "number=int(input(\"Enter Integer...\"))\n",
+      "exponent=int(input(\"Enter Exponent...\"))\n",
+      "while True:\n",
+      "    if (exponent<0):\n",
+      "        exponent=input(\"Enter a Non-Negative Integer :\")\n",
+      "    else:\n",
+      "        break\n",
+      "print number,\"raised to \",exponent,\" = \",power(number,exponent)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer...4\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Exponent...2\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "4 raised to  2  =  16\n"
+       ]
+      }
+     ],
+     "prompt_number": 7
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter12_15.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter12_15.ipynb
new file mode 100755
index 00000000..f5e720e1
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter12_15.ipynb
@@ -0,0 +1,436 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:fddb630ff591f8acea671441a1ef2200894f84585416ff0fca0f361802a87050"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "12:USER DEFINED FUNCTIONS"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.4.1, page number:194"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def get_a_value():\n",
+      "    return float(input())\n",
+      "print \"Enter the Length..\"\n",
+      "leng=get_a_value()\n",
+      "print \"Enter the Width..\"\n",
+      "width=get_a_value()\n",
+      "print \"Area = \",leng*width"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the Length..\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "16.8\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the Width..\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "43.7\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Area =  734.16\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.5.1, page number:195"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def change_index():\n",
+      "    index=5\n",
+      "index=3\n",
+      "print \"index = \",index\n",
+      "change_index()\n",
+      "print \"index = \",index"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "index =  3\n",
+        "index =  3\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.5.2, page number:196"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def get_a_value():\n",
+      "    return float(input())\n",
+      "def calc_area():\n",
+      "    global leng,width\n",
+      "    return leng*width\n",
+      "print \"Enter the Length..\"\n",
+      "leng=get_a_value()\n",
+      "print \"Enter the Width..\"\n",
+      "width=get_a_value()\n",
+      "print \"Area = \",calc_area()\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the Length..\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "12.5\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the Width..\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "23.7\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Area =  296.25\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.6.1, page number:197"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def print_value(k):\n",
+      "    print k\n",
+      "numb=5\n",
+      "print \"Value of Expression : \",\n",
+      "print_value(numb*3+2)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Value of Expression :  17\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.7.1, page number:198"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def TOL():\n",
+      "    return 0.0001\n",
+      "def sqrt(n):\n",
+      "    if n>0.0:\n",
+      "        guess=0.0\n",
+      "        guess=n/2.0\n",
+      "        while True:\n",
+      "            if ((guess*guess-n) > TOL()) or ((guess*guess-n) < -TOL()):\n",
+      "                temp=guess+n/guess\n",
+      "                guess=temp/2.0\n",
+      "            else:\n",
+      "                break\n",
+      "        return guess\n",
+      "    else:\n",
+      "        return -1.0\n",
+      "            \n",
+      "numb=float(input(\"Enter number..\"))\n",
+      "print \"Square Root of\",numb,\"is\",sqrt(numb)\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter number..17.1\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Square Root of 17.1 is 4.13521500873\n"
+       ]
+      }
+     ],
+     "prompt_number": 4
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.8.1, page number:198"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "year=0\n",
+      "def leap(n):\n",
+      "    return (n%4 == 0)and(n%100 != 0)or(n%400 == 0)\n",
+      "year=int(input(\"Enter Year..\"))\n",
+      "if leap(year):\n",
+      "    print year,\"is leap year\"\n",
+      "else:\n",
+      "    print year,\"is not leap year\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Year..1984\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1984 is leap year\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.9.1, page number:199"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def input_value():\n",
+      "    return input()\n",
+      "def area(l,w):\n",
+      "    return l*w\n",
+      "print \"Length = \"\n",
+      "length=input_value();\n",
+      "print \"Width = \"\n",
+      "width=input_value();\n",
+      "print \"Area = \",area(length,width)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Length = \n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "12.5\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Width = \n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "23.7\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Area =  296.25\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.9.2, page number:200"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "value=1\n",
+      "def power(n,e):\n",
+      "    global value\n",
+      "    if(e<0):\n",
+      "        return 0\n",
+      "    for index in range(0,e):\n",
+      "        if(index < e):\n",
+      "            value*=n\n",
+      "            index+=1\n",
+      "    return value\n",
+      "            \n",
+      "number=int(input(\"Enter Integer...\"))\n",
+      "exponent=int(input(\"Enter Exponent...\"))\n",
+      "while True:\n",
+      "    if (exponent<0):\n",
+      "        exponent=input(\"Enter a Non-Negative Integer :\")\n",
+      "    else:\n",
+      "        break\n",
+      "print number,\"raised to \",exponent,\" = \",power(number,exponent)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer...4\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Exponent...2\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "4 raised to  2  =  16\n"
+       ]
+      }
+     ],
+     "prompt_number": 7
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter12_2.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter12_2.ipynb
new file mode 100755
index 00000000..f5e720e1
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter12_2.ipynb
@@ -0,0 +1,436 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:fddb630ff591f8acea671441a1ef2200894f84585416ff0fca0f361802a87050"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "12:USER DEFINED FUNCTIONS"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.4.1, page number:194"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def get_a_value():\n",
+      "    return float(input())\n",
+      "print \"Enter the Length..\"\n",
+      "leng=get_a_value()\n",
+      "print \"Enter the Width..\"\n",
+      "width=get_a_value()\n",
+      "print \"Area = \",leng*width"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the Length..\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "16.8\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the Width..\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "43.7\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Area =  734.16\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.5.1, page number:195"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def change_index():\n",
+      "    index=5\n",
+      "index=3\n",
+      "print \"index = \",index\n",
+      "change_index()\n",
+      "print \"index = \",index"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "index =  3\n",
+        "index =  3\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.5.2, page number:196"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def get_a_value():\n",
+      "    return float(input())\n",
+      "def calc_area():\n",
+      "    global leng,width\n",
+      "    return leng*width\n",
+      "print \"Enter the Length..\"\n",
+      "leng=get_a_value()\n",
+      "print \"Enter the Width..\"\n",
+      "width=get_a_value()\n",
+      "print \"Area = \",calc_area()\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the Length..\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "12.5\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the Width..\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "23.7\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Area =  296.25\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.6.1, page number:197"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def print_value(k):\n",
+      "    print k\n",
+      "numb=5\n",
+      "print \"Value of Expression : \",\n",
+      "print_value(numb*3+2)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Value of Expression :  17\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.7.1, page number:198"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def TOL():\n",
+      "    return 0.0001\n",
+      "def sqrt(n):\n",
+      "    if n>0.0:\n",
+      "        guess=0.0\n",
+      "        guess=n/2.0\n",
+      "        while True:\n",
+      "            if ((guess*guess-n) > TOL()) or ((guess*guess-n) < -TOL()):\n",
+      "                temp=guess+n/guess\n",
+      "                guess=temp/2.0\n",
+      "            else:\n",
+      "                break\n",
+      "        return guess\n",
+      "    else:\n",
+      "        return -1.0\n",
+      "            \n",
+      "numb=float(input(\"Enter number..\"))\n",
+      "print \"Square Root of\",numb,\"is\",sqrt(numb)\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter number..17.1\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Square Root of 17.1 is 4.13521500873\n"
+       ]
+      }
+     ],
+     "prompt_number": 4
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.8.1, page number:198"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "year=0\n",
+      "def leap(n):\n",
+      "    return (n%4 == 0)and(n%100 != 0)or(n%400 == 0)\n",
+      "year=int(input(\"Enter Year..\"))\n",
+      "if leap(year):\n",
+      "    print year,\"is leap year\"\n",
+      "else:\n",
+      "    print year,\"is not leap year\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Year..1984\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1984 is leap year\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.9.1, page number:199"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def input_value():\n",
+      "    return input()\n",
+      "def area(l,w):\n",
+      "    return l*w\n",
+      "print \"Length = \"\n",
+      "length=input_value();\n",
+      "print \"Width = \"\n",
+      "width=input_value();\n",
+      "print \"Area = \",area(length,width)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Length = \n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "12.5\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Width = \n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "23.7\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Area =  296.25\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.9.2, page number:200"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "value=1\n",
+      "def power(n,e):\n",
+      "    global value\n",
+      "    if(e<0):\n",
+      "        return 0\n",
+      "    for index in range(0,e):\n",
+      "        if(index < e):\n",
+      "            value*=n\n",
+      "            index+=1\n",
+      "    return value\n",
+      "            \n",
+      "number=int(input(\"Enter Integer...\"))\n",
+      "exponent=int(input(\"Enter Exponent...\"))\n",
+      "while True:\n",
+      "    if (exponent<0):\n",
+      "        exponent=input(\"Enter a Non-Negative Integer :\")\n",
+      "    else:\n",
+      "        break\n",
+      "print number,\"raised to \",exponent,\" = \",power(number,exponent)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer...4\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Exponent...2\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "4 raised to  2  =  16\n"
+       ]
+      }
+     ],
+     "prompt_number": 7
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter12_3.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter12_3.ipynb
new file mode 100755
index 00000000..f5e720e1
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter12_3.ipynb
@@ -0,0 +1,436 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:fddb630ff591f8acea671441a1ef2200894f84585416ff0fca0f361802a87050"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "12:USER DEFINED FUNCTIONS"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.4.1, page number:194"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def get_a_value():\n",
+      "    return float(input())\n",
+      "print \"Enter the Length..\"\n",
+      "leng=get_a_value()\n",
+      "print \"Enter the Width..\"\n",
+      "width=get_a_value()\n",
+      "print \"Area = \",leng*width"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the Length..\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "16.8\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the Width..\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "43.7\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Area =  734.16\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.5.1, page number:195"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def change_index():\n",
+      "    index=5\n",
+      "index=3\n",
+      "print \"index = \",index\n",
+      "change_index()\n",
+      "print \"index = \",index"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "index =  3\n",
+        "index =  3\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.5.2, page number:196"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def get_a_value():\n",
+      "    return float(input())\n",
+      "def calc_area():\n",
+      "    global leng,width\n",
+      "    return leng*width\n",
+      "print \"Enter the Length..\"\n",
+      "leng=get_a_value()\n",
+      "print \"Enter the Width..\"\n",
+      "width=get_a_value()\n",
+      "print \"Area = \",calc_area()\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the Length..\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "12.5\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the Width..\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "23.7\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Area =  296.25\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.6.1, page number:197"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def print_value(k):\n",
+      "    print k\n",
+      "numb=5\n",
+      "print \"Value of Expression : \",\n",
+      "print_value(numb*3+2)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Value of Expression :  17\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.7.1, page number:198"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def TOL():\n",
+      "    return 0.0001\n",
+      "def sqrt(n):\n",
+      "    if n>0.0:\n",
+      "        guess=0.0\n",
+      "        guess=n/2.0\n",
+      "        while True:\n",
+      "            if ((guess*guess-n) > TOL()) or ((guess*guess-n) < -TOL()):\n",
+      "                temp=guess+n/guess\n",
+      "                guess=temp/2.0\n",
+      "            else:\n",
+      "                break\n",
+      "        return guess\n",
+      "    else:\n",
+      "        return -1.0\n",
+      "            \n",
+      "numb=float(input(\"Enter number..\"))\n",
+      "print \"Square Root of\",numb,\"is\",sqrt(numb)\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter number..17.1\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Square Root of 17.1 is 4.13521500873\n"
+       ]
+      }
+     ],
+     "prompt_number": 4
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.8.1, page number:198"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "year=0\n",
+      "def leap(n):\n",
+      "    return (n%4 == 0)and(n%100 != 0)or(n%400 == 0)\n",
+      "year=int(input(\"Enter Year..\"))\n",
+      "if leap(year):\n",
+      "    print year,\"is leap year\"\n",
+      "else:\n",
+      "    print year,\"is not leap year\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Year..1984\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1984 is leap year\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.9.1, page number:199"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def input_value():\n",
+      "    return input()\n",
+      "def area(l,w):\n",
+      "    return l*w\n",
+      "print \"Length = \"\n",
+      "length=input_value();\n",
+      "print \"Width = \"\n",
+      "width=input_value();\n",
+      "print \"Area = \",area(length,width)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Length = \n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "12.5\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Width = \n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "23.7\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Area =  296.25\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.9.2, page number:200"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "value=1\n",
+      "def power(n,e):\n",
+      "    global value\n",
+      "    if(e<0):\n",
+      "        return 0\n",
+      "    for index in range(0,e):\n",
+      "        if(index < e):\n",
+      "            value*=n\n",
+      "            index+=1\n",
+      "    return value\n",
+      "            \n",
+      "number=int(input(\"Enter Integer...\"))\n",
+      "exponent=int(input(\"Enter Exponent...\"))\n",
+      "while True:\n",
+      "    if (exponent<0):\n",
+      "        exponent=input(\"Enter a Non-Negative Integer :\")\n",
+      "    else:\n",
+      "        break\n",
+      "print number,\"raised to \",exponent,\" = \",power(number,exponent)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer...4\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Exponent...2\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "4 raised to  2  =  16\n"
+       ]
+      }
+     ],
+     "prompt_number": 7
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter12_4.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter12_4.ipynb
new file mode 100755
index 00000000..f5e720e1
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter12_4.ipynb
@@ -0,0 +1,436 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:fddb630ff591f8acea671441a1ef2200894f84585416ff0fca0f361802a87050"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "12:USER DEFINED FUNCTIONS"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.4.1, page number:194"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def get_a_value():\n",
+      "    return float(input())\n",
+      "print \"Enter the Length..\"\n",
+      "leng=get_a_value()\n",
+      "print \"Enter the Width..\"\n",
+      "width=get_a_value()\n",
+      "print \"Area = \",leng*width"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the Length..\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "16.8\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the Width..\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "43.7\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Area =  734.16\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.5.1, page number:195"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def change_index():\n",
+      "    index=5\n",
+      "index=3\n",
+      "print \"index = \",index\n",
+      "change_index()\n",
+      "print \"index = \",index"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "index =  3\n",
+        "index =  3\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.5.2, page number:196"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def get_a_value():\n",
+      "    return float(input())\n",
+      "def calc_area():\n",
+      "    global leng,width\n",
+      "    return leng*width\n",
+      "print \"Enter the Length..\"\n",
+      "leng=get_a_value()\n",
+      "print \"Enter the Width..\"\n",
+      "width=get_a_value()\n",
+      "print \"Area = \",calc_area()\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the Length..\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "12.5\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the Width..\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "23.7\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Area =  296.25\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.6.1, page number:197"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def print_value(k):\n",
+      "    print k\n",
+      "numb=5\n",
+      "print \"Value of Expression : \",\n",
+      "print_value(numb*3+2)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Value of Expression :  17\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.7.1, page number:198"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def TOL():\n",
+      "    return 0.0001\n",
+      "def sqrt(n):\n",
+      "    if n>0.0:\n",
+      "        guess=0.0\n",
+      "        guess=n/2.0\n",
+      "        while True:\n",
+      "            if ((guess*guess-n) > TOL()) or ((guess*guess-n) < -TOL()):\n",
+      "                temp=guess+n/guess\n",
+      "                guess=temp/2.0\n",
+      "            else:\n",
+      "                break\n",
+      "        return guess\n",
+      "    else:\n",
+      "        return -1.0\n",
+      "            \n",
+      "numb=float(input(\"Enter number..\"))\n",
+      "print \"Square Root of\",numb,\"is\",sqrt(numb)\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter number..17.1\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Square Root of 17.1 is 4.13521500873\n"
+       ]
+      }
+     ],
+     "prompt_number": 4
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.8.1, page number:198"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "year=0\n",
+      "def leap(n):\n",
+      "    return (n%4 == 0)and(n%100 != 0)or(n%400 == 0)\n",
+      "year=int(input(\"Enter Year..\"))\n",
+      "if leap(year):\n",
+      "    print year,\"is leap year\"\n",
+      "else:\n",
+      "    print year,\"is not leap year\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Year..1984\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1984 is leap year\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.9.1, page number:199"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def input_value():\n",
+      "    return input()\n",
+      "def area(l,w):\n",
+      "    return l*w\n",
+      "print \"Length = \"\n",
+      "length=input_value();\n",
+      "print \"Width = \"\n",
+      "width=input_value();\n",
+      "print \"Area = \",area(length,width)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Length = \n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "12.5\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Width = \n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "23.7\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Area =  296.25\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.9.2, page number:200"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "value=1\n",
+      "def power(n,e):\n",
+      "    global value\n",
+      "    if(e<0):\n",
+      "        return 0\n",
+      "    for index in range(0,e):\n",
+      "        if(index < e):\n",
+      "            value*=n\n",
+      "            index+=1\n",
+      "    return value\n",
+      "            \n",
+      "number=int(input(\"Enter Integer...\"))\n",
+      "exponent=int(input(\"Enter Exponent...\"))\n",
+      "while True:\n",
+      "    if (exponent<0):\n",
+      "        exponent=input(\"Enter a Non-Negative Integer :\")\n",
+      "    else:\n",
+      "        break\n",
+      "print number,\"raised to \",exponent,\" = \",power(number,exponent)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer...4\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Exponent...2\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "4 raised to  2  =  16\n"
+       ]
+      }
+     ],
+     "prompt_number": 7
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter12_5.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter12_5.ipynb
new file mode 100755
index 00000000..f5e720e1
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter12_5.ipynb
@@ -0,0 +1,436 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:fddb630ff591f8acea671441a1ef2200894f84585416ff0fca0f361802a87050"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "12:USER DEFINED FUNCTIONS"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.4.1, page number:194"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def get_a_value():\n",
+      "    return float(input())\n",
+      "print \"Enter the Length..\"\n",
+      "leng=get_a_value()\n",
+      "print \"Enter the Width..\"\n",
+      "width=get_a_value()\n",
+      "print \"Area = \",leng*width"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the Length..\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "16.8\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the Width..\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "43.7\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Area =  734.16\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.5.1, page number:195"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def change_index():\n",
+      "    index=5\n",
+      "index=3\n",
+      "print \"index = \",index\n",
+      "change_index()\n",
+      "print \"index = \",index"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "index =  3\n",
+        "index =  3\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.5.2, page number:196"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def get_a_value():\n",
+      "    return float(input())\n",
+      "def calc_area():\n",
+      "    global leng,width\n",
+      "    return leng*width\n",
+      "print \"Enter the Length..\"\n",
+      "leng=get_a_value()\n",
+      "print \"Enter the Width..\"\n",
+      "width=get_a_value()\n",
+      "print \"Area = \",calc_area()\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the Length..\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "12.5\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the Width..\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "23.7\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Area =  296.25\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.6.1, page number:197"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def print_value(k):\n",
+      "    print k\n",
+      "numb=5\n",
+      "print \"Value of Expression : \",\n",
+      "print_value(numb*3+2)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Value of Expression :  17\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.7.1, page number:198"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def TOL():\n",
+      "    return 0.0001\n",
+      "def sqrt(n):\n",
+      "    if n>0.0:\n",
+      "        guess=0.0\n",
+      "        guess=n/2.0\n",
+      "        while True:\n",
+      "            if ((guess*guess-n) > TOL()) or ((guess*guess-n) < -TOL()):\n",
+      "                temp=guess+n/guess\n",
+      "                guess=temp/2.0\n",
+      "            else:\n",
+      "                break\n",
+      "        return guess\n",
+      "    else:\n",
+      "        return -1.0\n",
+      "            \n",
+      "numb=float(input(\"Enter number..\"))\n",
+      "print \"Square Root of\",numb,\"is\",sqrt(numb)\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter number..17.1\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Square Root of 17.1 is 4.13521500873\n"
+       ]
+      }
+     ],
+     "prompt_number": 4
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.8.1, page number:198"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "year=0\n",
+      "def leap(n):\n",
+      "    return (n%4 == 0)and(n%100 != 0)or(n%400 == 0)\n",
+      "year=int(input(\"Enter Year..\"))\n",
+      "if leap(year):\n",
+      "    print year,\"is leap year\"\n",
+      "else:\n",
+      "    print year,\"is not leap year\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Year..1984\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1984 is leap year\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.9.1, page number:199"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def input_value():\n",
+      "    return input()\n",
+      "def area(l,w):\n",
+      "    return l*w\n",
+      "print \"Length = \"\n",
+      "length=input_value();\n",
+      "print \"Width = \"\n",
+      "width=input_value();\n",
+      "print \"Area = \",area(length,width)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Length = \n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "12.5\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Width = \n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "23.7\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Area =  296.25\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.9.2, page number:200"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "value=1\n",
+      "def power(n,e):\n",
+      "    global value\n",
+      "    if(e<0):\n",
+      "        return 0\n",
+      "    for index in range(0,e):\n",
+      "        if(index < e):\n",
+      "            value*=n\n",
+      "            index+=1\n",
+      "    return value\n",
+      "            \n",
+      "number=int(input(\"Enter Integer...\"))\n",
+      "exponent=int(input(\"Enter Exponent...\"))\n",
+      "while True:\n",
+      "    if (exponent<0):\n",
+      "        exponent=input(\"Enter a Non-Negative Integer :\")\n",
+      "    else:\n",
+      "        break\n",
+      "print number,\"raised to \",exponent,\" = \",power(number,exponent)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer...4\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Exponent...2\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "4 raised to  2  =  16\n"
+       ]
+      }
+     ],
+     "prompt_number": 7
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter12_6.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter12_6.ipynb
new file mode 100755
index 00000000..f5e720e1
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter12_6.ipynb
@@ -0,0 +1,436 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:fddb630ff591f8acea671441a1ef2200894f84585416ff0fca0f361802a87050"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "12:USER DEFINED FUNCTIONS"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.4.1, page number:194"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def get_a_value():\n",
+      "    return float(input())\n",
+      "print \"Enter the Length..\"\n",
+      "leng=get_a_value()\n",
+      "print \"Enter the Width..\"\n",
+      "width=get_a_value()\n",
+      "print \"Area = \",leng*width"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the Length..\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "16.8\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the Width..\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "43.7\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Area =  734.16\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.5.1, page number:195"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def change_index():\n",
+      "    index=5\n",
+      "index=3\n",
+      "print \"index = \",index\n",
+      "change_index()\n",
+      "print \"index = \",index"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "index =  3\n",
+        "index =  3\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.5.2, page number:196"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def get_a_value():\n",
+      "    return float(input())\n",
+      "def calc_area():\n",
+      "    global leng,width\n",
+      "    return leng*width\n",
+      "print \"Enter the Length..\"\n",
+      "leng=get_a_value()\n",
+      "print \"Enter the Width..\"\n",
+      "width=get_a_value()\n",
+      "print \"Area = \",calc_area()\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the Length..\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "12.5\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the Width..\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "23.7\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Area =  296.25\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.6.1, page number:197"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def print_value(k):\n",
+      "    print k\n",
+      "numb=5\n",
+      "print \"Value of Expression : \",\n",
+      "print_value(numb*3+2)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Value of Expression :  17\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.7.1, page number:198"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def TOL():\n",
+      "    return 0.0001\n",
+      "def sqrt(n):\n",
+      "    if n>0.0:\n",
+      "        guess=0.0\n",
+      "        guess=n/2.0\n",
+      "        while True:\n",
+      "            if ((guess*guess-n) > TOL()) or ((guess*guess-n) < -TOL()):\n",
+      "                temp=guess+n/guess\n",
+      "                guess=temp/2.0\n",
+      "            else:\n",
+      "                break\n",
+      "        return guess\n",
+      "    else:\n",
+      "        return -1.0\n",
+      "            \n",
+      "numb=float(input(\"Enter number..\"))\n",
+      "print \"Square Root of\",numb,\"is\",sqrt(numb)\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter number..17.1\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Square Root of 17.1 is 4.13521500873\n"
+       ]
+      }
+     ],
+     "prompt_number": 4
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.8.1, page number:198"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "year=0\n",
+      "def leap(n):\n",
+      "    return (n%4 == 0)and(n%100 != 0)or(n%400 == 0)\n",
+      "year=int(input(\"Enter Year..\"))\n",
+      "if leap(year):\n",
+      "    print year,\"is leap year\"\n",
+      "else:\n",
+      "    print year,\"is not leap year\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Year..1984\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1984 is leap year\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.9.1, page number:199"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def input_value():\n",
+      "    return input()\n",
+      "def area(l,w):\n",
+      "    return l*w\n",
+      "print \"Length = \"\n",
+      "length=input_value();\n",
+      "print \"Width = \"\n",
+      "width=input_value();\n",
+      "print \"Area = \",area(length,width)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Length = \n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "12.5\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Width = \n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "23.7\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Area =  296.25\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.9.2, page number:200"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "value=1\n",
+      "def power(n,e):\n",
+      "    global value\n",
+      "    if(e<0):\n",
+      "        return 0\n",
+      "    for index in range(0,e):\n",
+      "        if(index < e):\n",
+      "            value*=n\n",
+      "            index+=1\n",
+      "    return value\n",
+      "            \n",
+      "number=int(input(\"Enter Integer...\"))\n",
+      "exponent=int(input(\"Enter Exponent...\"))\n",
+      "while True:\n",
+      "    if (exponent<0):\n",
+      "        exponent=input(\"Enter a Non-Negative Integer :\")\n",
+      "    else:\n",
+      "        break\n",
+      "print number,\"raised to \",exponent,\" = \",power(number,exponent)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer...4\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Exponent...2\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "4 raised to  2  =  16\n"
+       ]
+      }
+     ],
+     "prompt_number": 7
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter12_7.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter12_7.ipynb
new file mode 100755
index 00000000..f5e720e1
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter12_7.ipynb
@@ -0,0 +1,436 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:fddb630ff591f8acea671441a1ef2200894f84585416ff0fca0f361802a87050"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "12:USER DEFINED FUNCTIONS"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.4.1, page number:194"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def get_a_value():\n",
+      "    return float(input())\n",
+      "print \"Enter the Length..\"\n",
+      "leng=get_a_value()\n",
+      "print \"Enter the Width..\"\n",
+      "width=get_a_value()\n",
+      "print \"Area = \",leng*width"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the Length..\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "16.8\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the Width..\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "43.7\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Area =  734.16\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.5.1, page number:195"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def change_index():\n",
+      "    index=5\n",
+      "index=3\n",
+      "print \"index = \",index\n",
+      "change_index()\n",
+      "print \"index = \",index"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "index =  3\n",
+        "index =  3\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.5.2, page number:196"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def get_a_value():\n",
+      "    return float(input())\n",
+      "def calc_area():\n",
+      "    global leng,width\n",
+      "    return leng*width\n",
+      "print \"Enter the Length..\"\n",
+      "leng=get_a_value()\n",
+      "print \"Enter the Width..\"\n",
+      "width=get_a_value()\n",
+      "print \"Area = \",calc_area()\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the Length..\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "12.5\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the Width..\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "23.7\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Area =  296.25\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.6.1, page number:197"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def print_value(k):\n",
+      "    print k\n",
+      "numb=5\n",
+      "print \"Value of Expression : \",\n",
+      "print_value(numb*3+2)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Value of Expression :  17\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.7.1, page number:198"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def TOL():\n",
+      "    return 0.0001\n",
+      "def sqrt(n):\n",
+      "    if n>0.0:\n",
+      "        guess=0.0\n",
+      "        guess=n/2.0\n",
+      "        while True:\n",
+      "            if ((guess*guess-n) > TOL()) or ((guess*guess-n) < -TOL()):\n",
+      "                temp=guess+n/guess\n",
+      "                guess=temp/2.0\n",
+      "            else:\n",
+      "                break\n",
+      "        return guess\n",
+      "    else:\n",
+      "        return -1.0\n",
+      "            \n",
+      "numb=float(input(\"Enter number..\"))\n",
+      "print \"Square Root of\",numb,\"is\",sqrt(numb)\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter number..17.1\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Square Root of 17.1 is 4.13521500873\n"
+       ]
+      }
+     ],
+     "prompt_number": 4
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.8.1, page number:198"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "year=0\n",
+      "def leap(n):\n",
+      "    return (n%4 == 0)and(n%100 != 0)or(n%400 == 0)\n",
+      "year=int(input(\"Enter Year..\"))\n",
+      "if leap(year):\n",
+      "    print year,\"is leap year\"\n",
+      "else:\n",
+      "    print year,\"is not leap year\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Year..1984\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1984 is leap year\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.9.1, page number:199"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def input_value():\n",
+      "    return input()\n",
+      "def area(l,w):\n",
+      "    return l*w\n",
+      "print \"Length = \"\n",
+      "length=input_value();\n",
+      "print \"Width = \"\n",
+      "width=input_value();\n",
+      "print \"Area = \",area(length,width)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Length = \n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "12.5\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Width = \n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "23.7\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Area =  296.25\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.9.2, page number:200"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "value=1\n",
+      "def power(n,e):\n",
+      "    global value\n",
+      "    if(e<0):\n",
+      "        return 0\n",
+      "    for index in range(0,e):\n",
+      "        if(index < e):\n",
+      "            value*=n\n",
+      "            index+=1\n",
+      "    return value\n",
+      "            \n",
+      "number=int(input(\"Enter Integer...\"))\n",
+      "exponent=int(input(\"Enter Exponent...\"))\n",
+      "while True:\n",
+      "    if (exponent<0):\n",
+      "        exponent=input(\"Enter a Non-Negative Integer :\")\n",
+      "    else:\n",
+      "        break\n",
+      "print number,\"raised to \",exponent,\" = \",power(number,exponent)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer...4\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Exponent...2\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "4 raised to  2  =  16\n"
+       ]
+      }
+     ],
+     "prompt_number": 7
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter12_8.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter12_8.ipynb
new file mode 100755
index 00000000..f5e720e1
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter12_8.ipynb
@@ -0,0 +1,436 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:fddb630ff591f8acea671441a1ef2200894f84585416ff0fca0f361802a87050"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "12:USER DEFINED FUNCTIONS"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.4.1, page number:194"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def get_a_value():\n",
+      "    return float(input())\n",
+      "print \"Enter the Length..\"\n",
+      "leng=get_a_value()\n",
+      "print \"Enter the Width..\"\n",
+      "width=get_a_value()\n",
+      "print \"Area = \",leng*width"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the Length..\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "16.8\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the Width..\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "43.7\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Area =  734.16\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.5.1, page number:195"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def change_index():\n",
+      "    index=5\n",
+      "index=3\n",
+      "print \"index = \",index\n",
+      "change_index()\n",
+      "print \"index = \",index"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "index =  3\n",
+        "index =  3\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.5.2, page number:196"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def get_a_value():\n",
+      "    return float(input())\n",
+      "def calc_area():\n",
+      "    global leng,width\n",
+      "    return leng*width\n",
+      "print \"Enter the Length..\"\n",
+      "leng=get_a_value()\n",
+      "print \"Enter the Width..\"\n",
+      "width=get_a_value()\n",
+      "print \"Area = \",calc_area()\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the Length..\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "12.5\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the Width..\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "23.7\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Area =  296.25\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.6.1, page number:197"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def print_value(k):\n",
+      "    print k\n",
+      "numb=5\n",
+      "print \"Value of Expression : \",\n",
+      "print_value(numb*3+2)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Value of Expression :  17\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.7.1, page number:198"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def TOL():\n",
+      "    return 0.0001\n",
+      "def sqrt(n):\n",
+      "    if n>0.0:\n",
+      "        guess=0.0\n",
+      "        guess=n/2.0\n",
+      "        while True:\n",
+      "            if ((guess*guess-n) > TOL()) or ((guess*guess-n) < -TOL()):\n",
+      "                temp=guess+n/guess\n",
+      "                guess=temp/2.0\n",
+      "            else:\n",
+      "                break\n",
+      "        return guess\n",
+      "    else:\n",
+      "        return -1.0\n",
+      "            \n",
+      "numb=float(input(\"Enter number..\"))\n",
+      "print \"Square Root of\",numb,\"is\",sqrt(numb)\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter number..17.1\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Square Root of 17.1 is 4.13521500873\n"
+       ]
+      }
+     ],
+     "prompt_number": 4
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.8.1, page number:198"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "year=0\n",
+      "def leap(n):\n",
+      "    return (n%4 == 0)and(n%100 != 0)or(n%400 == 0)\n",
+      "year=int(input(\"Enter Year..\"))\n",
+      "if leap(year):\n",
+      "    print year,\"is leap year\"\n",
+      "else:\n",
+      "    print year,\"is not leap year\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Year..1984\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1984 is leap year\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.9.1, page number:199"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def input_value():\n",
+      "    return input()\n",
+      "def area(l,w):\n",
+      "    return l*w\n",
+      "print \"Length = \"\n",
+      "length=input_value();\n",
+      "print \"Width = \"\n",
+      "width=input_value();\n",
+      "print \"Area = \",area(length,width)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Length = \n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "12.5\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Width = \n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "23.7\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Area =  296.25\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.9.2, page number:200"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "value=1\n",
+      "def power(n,e):\n",
+      "    global value\n",
+      "    if(e<0):\n",
+      "        return 0\n",
+      "    for index in range(0,e):\n",
+      "        if(index < e):\n",
+      "            value*=n\n",
+      "            index+=1\n",
+      "    return value\n",
+      "            \n",
+      "number=int(input(\"Enter Integer...\"))\n",
+      "exponent=int(input(\"Enter Exponent...\"))\n",
+      "while True:\n",
+      "    if (exponent<0):\n",
+      "        exponent=input(\"Enter a Non-Negative Integer :\")\n",
+      "    else:\n",
+      "        break\n",
+      "print number,\"raised to \",exponent,\" = \",power(number,exponent)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer...4\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Exponent...2\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "4 raised to  2  =  16\n"
+       ]
+      }
+     ],
+     "prompt_number": 7
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter12_9.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter12_9.ipynb
new file mode 100755
index 00000000..f5e720e1
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter12_9.ipynb
@@ -0,0 +1,436 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:fddb630ff591f8acea671441a1ef2200894f84585416ff0fca0f361802a87050"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "12:USER DEFINED FUNCTIONS"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.4.1, page number:194"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def get_a_value():\n",
+      "    return float(input())\n",
+      "print \"Enter the Length..\"\n",
+      "leng=get_a_value()\n",
+      "print \"Enter the Width..\"\n",
+      "width=get_a_value()\n",
+      "print \"Area = \",leng*width"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the Length..\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "16.8\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the Width..\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "43.7\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Area =  734.16\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.5.1, page number:195"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def change_index():\n",
+      "    index=5\n",
+      "index=3\n",
+      "print \"index = \",index\n",
+      "change_index()\n",
+      "print \"index = \",index"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "index =  3\n",
+        "index =  3\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.5.2, page number:196"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def get_a_value():\n",
+      "    return float(input())\n",
+      "def calc_area():\n",
+      "    global leng,width\n",
+      "    return leng*width\n",
+      "print \"Enter the Length..\"\n",
+      "leng=get_a_value()\n",
+      "print \"Enter the Width..\"\n",
+      "width=get_a_value()\n",
+      "print \"Area = \",calc_area()\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the Length..\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "12.5\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the Width..\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "23.7\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Area =  296.25\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.6.1, page number:197"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def print_value(k):\n",
+      "    print k\n",
+      "numb=5\n",
+      "print \"Value of Expression : \",\n",
+      "print_value(numb*3+2)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Value of Expression :  17\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.7.1, page number:198"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def TOL():\n",
+      "    return 0.0001\n",
+      "def sqrt(n):\n",
+      "    if n>0.0:\n",
+      "        guess=0.0\n",
+      "        guess=n/2.0\n",
+      "        while True:\n",
+      "            if ((guess*guess-n) > TOL()) or ((guess*guess-n) < -TOL()):\n",
+      "                temp=guess+n/guess\n",
+      "                guess=temp/2.0\n",
+      "            else:\n",
+      "                break\n",
+      "        return guess\n",
+      "    else:\n",
+      "        return -1.0\n",
+      "            \n",
+      "numb=float(input(\"Enter number..\"))\n",
+      "print \"Square Root of\",numb,\"is\",sqrt(numb)\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter number..17.1\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Square Root of 17.1 is 4.13521500873\n"
+       ]
+      }
+     ],
+     "prompt_number": 4
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.8.1, page number:198"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "year=0\n",
+      "def leap(n):\n",
+      "    return (n%4 == 0)and(n%100 != 0)or(n%400 == 0)\n",
+      "year=int(input(\"Enter Year..\"))\n",
+      "if leap(year):\n",
+      "    print year,\"is leap year\"\n",
+      "else:\n",
+      "    print year,\"is not leap year\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Year..1984\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1984 is leap year\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.9.1, page number:199"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def input_value():\n",
+      "    return input()\n",
+      "def area(l,w):\n",
+      "    return l*w\n",
+      "print \"Length = \"\n",
+      "length=input_value();\n",
+      "print \"Width = \"\n",
+      "width=input_value();\n",
+      "print \"Area = \",area(length,width)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Length = \n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "12.5\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Width = \n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "23.7\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Area =  296.25\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "12.9.2, page number:200"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "value=1\n",
+      "def power(n,e):\n",
+      "    global value\n",
+      "    if(e<0):\n",
+      "        return 0\n",
+      "    for index in range(0,e):\n",
+      "        if(index < e):\n",
+      "            value*=n\n",
+      "            index+=1\n",
+      "    return value\n",
+      "            \n",
+      "number=int(input(\"Enter Integer...\"))\n",
+      "exponent=int(input(\"Enter Exponent...\"))\n",
+      "while True:\n",
+      "    if (exponent<0):\n",
+      "        exponent=input(\"Enter a Non-Negative Integer :\")\n",
+      "    else:\n",
+      "        break\n",
+      "print number,\"raised to \",exponent,\" = \",power(number,exponent)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer...4\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Exponent...2\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "4 raised to  2  =  16\n"
+       ]
+      }
+     ],
+     "prompt_number": 7
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter13.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter13.ipynb
new file mode 100755
index 00000000..0c43b667
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter13.ipynb
@@ -0,0 +1,125 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:1ba129031b3dd7ed7efce1207bad751b6003f133c0f192eb72df391881da05bb"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "13:STRUCTURE AND UNIONS"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "13.2.1, page number:203"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "from collections import namedtuple\n",
+      "MyStruct = namedtuple(\"MyStruct\", \"regno fees\")\n",
+      "\n",
+      "integer = MyStruct(\"1234\", \" \")\n",
+      "real = MyStruct(\" \",\"320.17\")\n",
+      "integer=integer._replace(fees=real.fees)\n",
+      "real=real._replace(regno=integer.regno)\n",
+      "\n",
+      "print \"Reg_no : \",real.regno,\",Reg.no : \",integer.fees"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Reg_no :  1234 ,Reg.no :  320.17\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "13.3.1, page number:203"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "from collections import namedtuple\n",
+      "MyStruct = namedtuple(\"MyStruct\", \"regno fees\")\n",
+      "\n",
+      "\n",
+      "student = MyStruct(\"1234\", \"320.17\")\n",
+      "\n",
+      "print \"Reg.no : \",student.regno,\",Reg.no : \",student.fees"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Reg.no :  1234 ,Reg.no :  320.17\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "13.4.1, page number:204"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "from collections import namedtuple\n",
+      "MyStruct = namedtuple(\"MyStruct\", \"regno fees\")\n",
+      "\n",
+      "integer = MyStruct(\"1234\", \"320.17\")\n",
+      "real = MyStruct(\"\",\"\")\n",
+      "real=real._replace(regno=integer.regno,fees=integer.fees)\n",
+      "\n",
+      "print \"Reg_no : \",real.regno,\",Reg.no : \",real.fees"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Reg_no :  1234 ,Reg.no :  320.17\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter13_1.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter13_1.ipynb
new file mode 100755
index 00000000..0c43b667
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter13_1.ipynb
@@ -0,0 +1,125 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:1ba129031b3dd7ed7efce1207bad751b6003f133c0f192eb72df391881da05bb"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "13:STRUCTURE AND UNIONS"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "13.2.1, page number:203"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "from collections import namedtuple\n",
+      "MyStruct = namedtuple(\"MyStruct\", \"regno fees\")\n",
+      "\n",
+      "integer = MyStruct(\"1234\", \" \")\n",
+      "real = MyStruct(\" \",\"320.17\")\n",
+      "integer=integer._replace(fees=real.fees)\n",
+      "real=real._replace(regno=integer.regno)\n",
+      "\n",
+      "print \"Reg_no : \",real.regno,\",Reg.no : \",integer.fees"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Reg_no :  1234 ,Reg.no :  320.17\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "13.3.1, page number:203"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "from collections import namedtuple\n",
+      "MyStruct = namedtuple(\"MyStruct\", \"regno fees\")\n",
+      "\n",
+      "\n",
+      "student = MyStruct(\"1234\", \"320.17\")\n",
+      "\n",
+      "print \"Reg.no : \",student.regno,\",Reg.no : \",student.fees"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Reg.no :  1234 ,Reg.no :  320.17\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "13.4.1, page number:204"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "from collections import namedtuple\n",
+      "MyStruct = namedtuple(\"MyStruct\", \"regno fees\")\n",
+      "\n",
+      "integer = MyStruct(\"1234\", \"320.17\")\n",
+      "real = MyStruct(\"\",\"\")\n",
+      "real=real._replace(regno=integer.regno,fees=integer.fees)\n",
+      "\n",
+      "print \"Reg_no : \",real.regno,\",Reg.no : \",real.fees"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Reg_no :  1234 ,Reg.no :  320.17\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter13_10.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter13_10.ipynb
new file mode 100755
index 00000000..0c43b667
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter13_10.ipynb
@@ -0,0 +1,125 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:1ba129031b3dd7ed7efce1207bad751b6003f133c0f192eb72df391881da05bb"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "13:STRUCTURE AND UNIONS"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "13.2.1, page number:203"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "from collections import namedtuple\n",
+      "MyStruct = namedtuple(\"MyStruct\", \"regno fees\")\n",
+      "\n",
+      "integer = MyStruct(\"1234\", \" \")\n",
+      "real = MyStruct(\" \",\"320.17\")\n",
+      "integer=integer._replace(fees=real.fees)\n",
+      "real=real._replace(regno=integer.regno)\n",
+      "\n",
+      "print \"Reg_no : \",real.regno,\",Reg.no : \",integer.fees"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Reg_no :  1234 ,Reg.no :  320.17\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "13.3.1, page number:203"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "from collections import namedtuple\n",
+      "MyStruct = namedtuple(\"MyStruct\", \"regno fees\")\n",
+      "\n",
+      "\n",
+      "student = MyStruct(\"1234\", \"320.17\")\n",
+      "\n",
+      "print \"Reg.no : \",student.regno,\",Reg.no : \",student.fees"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Reg.no :  1234 ,Reg.no :  320.17\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "13.4.1, page number:204"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "from collections import namedtuple\n",
+      "MyStruct = namedtuple(\"MyStruct\", \"regno fees\")\n",
+      "\n",
+      "integer = MyStruct(\"1234\", \"320.17\")\n",
+      "real = MyStruct(\"\",\"\")\n",
+      "real=real._replace(regno=integer.regno,fees=integer.fees)\n",
+      "\n",
+      "print \"Reg_no : \",real.regno,\",Reg.no : \",real.fees"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Reg_no :  1234 ,Reg.no :  320.17\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter13_11.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter13_11.ipynb
new file mode 100755
index 00000000..0c43b667
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter13_11.ipynb
@@ -0,0 +1,125 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:1ba129031b3dd7ed7efce1207bad751b6003f133c0f192eb72df391881da05bb"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "13:STRUCTURE AND UNIONS"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "13.2.1, page number:203"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "from collections import namedtuple\n",
+      "MyStruct = namedtuple(\"MyStruct\", \"regno fees\")\n",
+      "\n",
+      "integer = MyStruct(\"1234\", \" \")\n",
+      "real = MyStruct(\" \",\"320.17\")\n",
+      "integer=integer._replace(fees=real.fees)\n",
+      "real=real._replace(regno=integer.regno)\n",
+      "\n",
+      "print \"Reg_no : \",real.regno,\",Reg.no : \",integer.fees"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Reg_no :  1234 ,Reg.no :  320.17\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "13.3.1, page number:203"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "from collections import namedtuple\n",
+      "MyStruct = namedtuple(\"MyStruct\", \"regno fees\")\n",
+      "\n",
+      "\n",
+      "student = MyStruct(\"1234\", \"320.17\")\n",
+      "\n",
+      "print \"Reg.no : \",student.regno,\",Reg.no : \",student.fees"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Reg.no :  1234 ,Reg.no :  320.17\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "13.4.1, page number:204"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "from collections import namedtuple\n",
+      "MyStruct = namedtuple(\"MyStruct\", \"regno fees\")\n",
+      "\n",
+      "integer = MyStruct(\"1234\", \"320.17\")\n",
+      "real = MyStruct(\"\",\"\")\n",
+      "real=real._replace(regno=integer.regno,fees=integer.fees)\n",
+      "\n",
+      "print \"Reg_no : \",real.regno,\",Reg.no : \",real.fees"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Reg_no :  1234 ,Reg.no :  320.17\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter13_12.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter13_12.ipynb
new file mode 100755
index 00000000..0c43b667
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter13_12.ipynb
@@ -0,0 +1,125 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:1ba129031b3dd7ed7efce1207bad751b6003f133c0f192eb72df391881da05bb"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "13:STRUCTURE AND UNIONS"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "13.2.1, page number:203"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "from collections import namedtuple\n",
+      "MyStruct = namedtuple(\"MyStruct\", \"regno fees\")\n",
+      "\n",
+      "integer = MyStruct(\"1234\", \" \")\n",
+      "real = MyStruct(\" \",\"320.17\")\n",
+      "integer=integer._replace(fees=real.fees)\n",
+      "real=real._replace(regno=integer.regno)\n",
+      "\n",
+      "print \"Reg_no : \",real.regno,\",Reg.no : \",integer.fees"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Reg_no :  1234 ,Reg.no :  320.17\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "13.3.1, page number:203"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "from collections import namedtuple\n",
+      "MyStruct = namedtuple(\"MyStruct\", \"regno fees\")\n",
+      "\n",
+      "\n",
+      "student = MyStruct(\"1234\", \"320.17\")\n",
+      "\n",
+      "print \"Reg.no : \",student.regno,\",Reg.no : \",student.fees"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Reg.no :  1234 ,Reg.no :  320.17\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "13.4.1, page number:204"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "from collections import namedtuple\n",
+      "MyStruct = namedtuple(\"MyStruct\", \"regno fees\")\n",
+      "\n",
+      "integer = MyStruct(\"1234\", \"320.17\")\n",
+      "real = MyStruct(\"\",\"\")\n",
+      "real=real._replace(regno=integer.regno,fees=integer.fees)\n",
+      "\n",
+      "print \"Reg_no : \",real.regno,\",Reg.no : \",real.fees"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Reg_no :  1234 ,Reg.no :  320.17\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter13_13.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter13_13.ipynb
new file mode 100755
index 00000000..0c43b667
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter13_13.ipynb
@@ -0,0 +1,125 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:1ba129031b3dd7ed7efce1207bad751b6003f133c0f192eb72df391881da05bb"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "13:STRUCTURE AND UNIONS"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "13.2.1, page number:203"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "from collections import namedtuple\n",
+      "MyStruct = namedtuple(\"MyStruct\", \"regno fees\")\n",
+      "\n",
+      "integer = MyStruct(\"1234\", \" \")\n",
+      "real = MyStruct(\" \",\"320.17\")\n",
+      "integer=integer._replace(fees=real.fees)\n",
+      "real=real._replace(regno=integer.regno)\n",
+      "\n",
+      "print \"Reg_no : \",real.regno,\",Reg.no : \",integer.fees"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Reg_no :  1234 ,Reg.no :  320.17\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "13.3.1, page number:203"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "from collections import namedtuple\n",
+      "MyStruct = namedtuple(\"MyStruct\", \"regno fees\")\n",
+      "\n",
+      "\n",
+      "student = MyStruct(\"1234\", \"320.17\")\n",
+      "\n",
+      "print \"Reg.no : \",student.regno,\",Reg.no : \",student.fees"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Reg.no :  1234 ,Reg.no :  320.17\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "13.4.1, page number:204"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "from collections import namedtuple\n",
+      "MyStruct = namedtuple(\"MyStruct\", \"regno fees\")\n",
+      "\n",
+      "integer = MyStruct(\"1234\", \"320.17\")\n",
+      "real = MyStruct(\"\",\"\")\n",
+      "real=real._replace(regno=integer.regno,fees=integer.fees)\n",
+      "\n",
+      "print \"Reg_no : \",real.regno,\",Reg.no : \",real.fees"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Reg_no :  1234 ,Reg.no :  320.17\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter13_14.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter13_14.ipynb
new file mode 100755
index 00000000..0c43b667
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter13_14.ipynb
@@ -0,0 +1,125 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:1ba129031b3dd7ed7efce1207bad751b6003f133c0f192eb72df391881da05bb"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "13:STRUCTURE AND UNIONS"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "13.2.1, page number:203"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "from collections import namedtuple\n",
+      "MyStruct = namedtuple(\"MyStruct\", \"regno fees\")\n",
+      "\n",
+      "integer = MyStruct(\"1234\", \" \")\n",
+      "real = MyStruct(\" \",\"320.17\")\n",
+      "integer=integer._replace(fees=real.fees)\n",
+      "real=real._replace(regno=integer.regno)\n",
+      "\n",
+      "print \"Reg_no : \",real.regno,\",Reg.no : \",integer.fees"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Reg_no :  1234 ,Reg.no :  320.17\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "13.3.1, page number:203"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "from collections import namedtuple\n",
+      "MyStruct = namedtuple(\"MyStruct\", \"regno fees\")\n",
+      "\n",
+      "\n",
+      "student = MyStruct(\"1234\", \"320.17\")\n",
+      "\n",
+      "print \"Reg.no : \",student.regno,\",Reg.no : \",student.fees"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Reg.no :  1234 ,Reg.no :  320.17\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "13.4.1, page number:204"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "from collections import namedtuple\n",
+      "MyStruct = namedtuple(\"MyStruct\", \"regno fees\")\n",
+      "\n",
+      "integer = MyStruct(\"1234\", \"320.17\")\n",
+      "real = MyStruct(\"\",\"\")\n",
+      "real=real._replace(regno=integer.regno,fees=integer.fees)\n",
+      "\n",
+      "print \"Reg_no : \",real.regno,\",Reg.no : \",real.fees"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Reg_no :  1234 ,Reg.no :  320.17\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter13_15.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter13_15.ipynb
new file mode 100755
index 00000000..0c43b667
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter13_15.ipynb
@@ -0,0 +1,125 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:1ba129031b3dd7ed7efce1207bad751b6003f133c0f192eb72df391881da05bb"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "13:STRUCTURE AND UNIONS"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "13.2.1, page number:203"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "from collections import namedtuple\n",
+      "MyStruct = namedtuple(\"MyStruct\", \"regno fees\")\n",
+      "\n",
+      "integer = MyStruct(\"1234\", \" \")\n",
+      "real = MyStruct(\" \",\"320.17\")\n",
+      "integer=integer._replace(fees=real.fees)\n",
+      "real=real._replace(regno=integer.regno)\n",
+      "\n",
+      "print \"Reg_no : \",real.regno,\",Reg.no : \",integer.fees"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Reg_no :  1234 ,Reg.no :  320.17\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "13.3.1, page number:203"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "from collections import namedtuple\n",
+      "MyStruct = namedtuple(\"MyStruct\", \"regno fees\")\n",
+      "\n",
+      "\n",
+      "student = MyStruct(\"1234\", \"320.17\")\n",
+      "\n",
+      "print \"Reg.no : \",student.regno,\",Reg.no : \",student.fees"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Reg.no :  1234 ,Reg.no :  320.17\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "13.4.1, page number:204"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "from collections import namedtuple\n",
+      "MyStruct = namedtuple(\"MyStruct\", \"regno fees\")\n",
+      "\n",
+      "integer = MyStruct(\"1234\", \"320.17\")\n",
+      "real = MyStruct(\"\",\"\")\n",
+      "real=real._replace(regno=integer.regno,fees=integer.fees)\n",
+      "\n",
+      "print \"Reg_no : \",real.regno,\",Reg.no : \",real.fees"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Reg_no :  1234 ,Reg.no :  320.17\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter13_2.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter13_2.ipynb
new file mode 100755
index 00000000..0c43b667
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter13_2.ipynb
@@ -0,0 +1,125 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:1ba129031b3dd7ed7efce1207bad751b6003f133c0f192eb72df391881da05bb"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "13:STRUCTURE AND UNIONS"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "13.2.1, page number:203"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "from collections import namedtuple\n",
+      "MyStruct = namedtuple(\"MyStruct\", \"regno fees\")\n",
+      "\n",
+      "integer = MyStruct(\"1234\", \" \")\n",
+      "real = MyStruct(\" \",\"320.17\")\n",
+      "integer=integer._replace(fees=real.fees)\n",
+      "real=real._replace(regno=integer.regno)\n",
+      "\n",
+      "print \"Reg_no : \",real.regno,\",Reg.no : \",integer.fees"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Reg_no :  1234 ,Reg.no :  320.17\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "13.3.1, page number:203"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "from collections import namedtuple\n",
+      "MyStruct = namedtuple(\"MyStruct\", \"regno fees\")\n",
+      "\n",
+      "\n",
+      "student = MyStruct(\"1234\", \"320.17\")\n",
+      "\n",
+      "print \"Reg.no : \",student.regno,\",Reg.no : \",student.fees"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Reg.no :  1234 ,Reg.no :  320.17\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "13.4.1, page number:204"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "from collections import namedtuple\n",
+      "MyStruct = namedtuple(\"MyStruct\", \"regno fees\")\n",
+      "\n",
+      "integer = MyStruct(\"1234\", \"320.17\")\n",
+      "real = MyStruct(\"\",\"\")\n",
+      "real=real._replace(regno=integer.regno,fees=integer.fees)\n",
+      "\n",
+      "print \"Reg_no : \",real.regno,\",Reg.no : \",real.fees"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Reg_no :  1234 ,Reg.no :  320.17\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter13_3.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter13_3.ipynb
new file mode 100755
index 00000000..0c43b667
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter13_3.ipynb
@@ -0,0 +1,125 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:1ba129031b3dd7ed7efce1207bad751b6003f133c0f192eb72df391881da05bb"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "13:STRUCTURE AND UNIONS"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "13.2.1, page number:203"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "from collections import namedtuple\n",
+      "MyStruct = namedtuple(\"MyStruct\", \"regno fees\")\n",
+      "\n",
+      "integer = MyStruct(\"1234\", \" \")\n",
+      "real = MyStruct(\" \",\"320.17\")\n",
+      "integer=integer._replace(fees=real.fees)\n",
+      "real=real._replace(regno=integer.regno)\n",
+      "\n",
+      "print \"Reg_no : \",real.regno,\",Reg.no : \",integer.fees"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Reg_no :  1234 ,Reg.no :  320.17\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "13.3.1, page number:203"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "from collections import namedtuple\n",
+      "MyStruct = namedtuple(\"MyStruct\", \"regno fees\")\n",
+      "\n",
+      "\n",
+      "student = MyStruct(\"1234\", \"320.17\")\n",
+      "\n",
+      "print \"Reg.no : \",student.regno,\",Reg.no : \",student.fees"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Reg.no :  1234 ,Reg.no :  320.17\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "13.4.1, page number:204"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "from collections import namedtuple\n",
+      "MyStruct = namedtuple(\"MyStruct\", \"regno fees\")\n",
+      "\n",
+      "integer = MyStruct(\"1234\", \"320.17\")\n",
+      "real = MyStruct(\"\",\"\")\n",
+      "real=real._replace(regno=integer.regno,fees=integer.fees)\n",
+      "\n",
+      "print \"Reg_no : \",real.regno,\",Reg.no : \",real.fees"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Reg_no :  1234 ,Reg.no :  320.17\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter13_4.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter13_4.ipynb
new file mode 100755
index 00000000..0c43b667
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter13_4.ipynb
@@ -0,0 +1,125 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:1ba129031b3dd7ed7efce1207bad751b6003f133c0f192eb72df391881da05bb"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "13:STRUCTURE AND UNIONS"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "13.2.1, page number:203"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "from collections import namedtuple\n",
+      "MyStruct = namedtuple(\"MyStruct\", \"regno fees\")\n",
+      "\n",
+      "integer = MyStruct(\"1234\", \" \")\n",
+      "real = MyStruct(\" \",\"320.17\")\n",
+      "integer=integer._replace(fees=real.fees)\n",
+      "real=real._replace(regno=integer.regno)\n",
+      "\n",
+      "print \"Reg_no : \",real.regno,\",Reg.no : \",integer.fees"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Reg_no :  1234 ,Reg.no :  320.17\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "13.3.1, page number:203"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "from collections import namedtuple\n",
+      "MyStruct = namedtuple(\"MyStruct\", \"regno fees\")\n",
+      "\n",
+      "\n",
+      "student = MyStruct(\"1234\", \"320.17\")\n",
+      "\n",
+      "print \"Reg.no : \",student.regno,\",Reg.no : \",student.fees"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Reg.no :  1234 ,Reg.no :  320.17\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "13.4.1, page number:204"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "from collections import namedtuple\n",
+      "MyStruct = namedtuple(\"MyStruct\", \"regno fees\")\n",
+      "\n",
+      "integer = MyStruct(\"1234\", \"320.17\")\n",
+      "real = MyStruct(\"\",\"\")\n",
+      "real=real._replace(regno=integer.regno,fees=integer.fees)\n",
+      "\n",
+      "print \"Reg_no : \",real.regno,\",Reg.no : \",real.fees"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Reg_no :  1234 ,Reg.no :  320.17\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter13_5.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter13_5.ipynb
new file mode 100755
index 00000000..0c43b667
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter13_5.ipynb
@@ -0,0 +1,125 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:1ba129031b3dd7ed7efce1207bad751b6003f133c0f192eb72df391881da05bb"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "13:STRUCTURE AND UNIONS"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "13.2.1, page number:203"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "from collections import namedtuple\n",
+      "MyStruct = namedtuple(\"MyStruct\", \"regno fees\")\n",
+      "\n",
+      "integer = MyStruct(\"1234\", \" \")\n",
+      "real = MyStruct(\" \",\"320.17\")\n",
+      "integer=integer._replace(fees=real.fees)\n",
+      "real=real._replace(regno=integer.regno)\n",
+      "\n",
+      "print \"Reg_no : \",real.regno,\",Reg.no : \",integer.fees"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Reg_no :  1234 ,Reg.no :  320.17\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "13.3.1, page number:203"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "from collections import namedtuple\n",
+      "MyStruct = namedtuple(\"MyStruct\", \"regno fees\")\n",
+      "\n",
+      "\n",
+      "student = MyStruct(\"1234\", \"320.17\")\n",
+      "\n",
+      "print \"Reg.no : \",student.regno,\",Reg.no : \",student.fees"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Reg.no :  1234 ,Reg.no :  320.17\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "13.4.1, page number:204"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "from collections import namedtuple\n",
+      "MyStruct = namedtuple(\"MyStruct\", \"regno fees\")\n",
+      "\n",
+      "integer = MyStruct(\"1234\", \"320.17\")\n",
+      "real = MyStruct(\"\",\"\")\n",
+      "real=real._replace(regno=integer.regno,fees=integer.fees)\n",
+      "\n",
+      "print \"Reg_no : \",real.regno,\",Reg.no : \",real.fees"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Reg_no :  1234 ,Reg.no :  320.17\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter13_6.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter13_6.ipynb
new file mode 100755
index 00000000..0c43b667
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter13_6.ipynb
@@ -0,0 +1,125 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:1ba129031b3dd7ed7efce1207bad751b6003f133c0f192eb72df391881da05bb"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "13:STRUCTURE AND UNIONS"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "13.2.1, page number:203"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "from collections import namedtuple\n",
+      "MyStruct = namedtuple(\"MyStruct\", \"regno fees\")\n",
+      "\n",
+      "integer = MyStruct(\"1234\", \" \")\n",
+      "real = MyStruct(\" \",\"320.17\")\n",
+      "integer=integer._replace(fees=real.fees)\n",
+      "real=real._replace(regno=integer.regno)\n",
+      "\n",
+      "print \"Reg_no : \",real.regno,\",Reg.no : \",integer.fees"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Reg_no :  1234 ,Reg.no :  320.17\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "13.3.1, page number:203"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "from collections import namedtuple\n",
+      "MyStruct = namedtuple(\"MyStruct\", \"regno fees\")\n",
+      "\n",
+      "\n",
+      "student = MyStruct(\"1234\", \"320.17\")\n",
+      "\n",
+      "print \"Reg.no : \",student.regno,\",Reg.no : \",student.fees"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Reg.no :  1234 ,Reg.no :  320.17\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "13.4.1, page number:204"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "from collections import namedtuple\n",
+      "MyStruct = namedtuple(\"MyStruct\", \"regno fees\")\n",
+      "\n",
+      "integer = MyStruct(\"1234\", \"320.17\")\n",
+      "real = MyStruct(\"\",\"\")\n",
+      "real=real._replace(regno=integer.regno,fees=integer.fees)\n",
+      "\n",
+      "print \"Reg_no : \",real.regno,\",Reg.no : \",real.fees"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Reg_no :  1234 ,Reg.no :  320.17\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter13_7.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter13_7.ipynb
new file mode 100755
index 00000000..0c43b667
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter13_7.ipynb
@@ -0,0 +1,125 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:1ba129031b3dd7ed7efce1207bad751b6003f133c0f192eb72df391881da05bb"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "13:STRUCTURE AND UNIONS"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "13.2.1, page number:203"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "from collections import namedtuple\n",
+      "MyStruct = namedtuple(\"MyStruct\", \"regno fees\")\n",
+      "\n",
+      "integer = MyStruct(\"1234\", \" \")\n",
+      "real = MyStruct(\" \",\"320.17\")\n",
+      "integer=integer._replace(fees=real.fees)\n",
+      "real=real._replace(regno=integer.regno)\n",
+      "\n",
+      "print \"Reg_no : \",real.regno,\",Reg.no : \",integer.fees"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Reg_no :  1234 ,Reg.no :  320.17\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "13.3.1, page number:203"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "from collections import namedtuple\n",
+      "MyStruct = namedtuple(\"MyStruct\", \"regno fees\")\n",
+      "\n",
+      "\n",
+      "student = MyStruct(\"1234\", \"320.17\")\n",
+      "\n",
+      "print \"Reg.no : \",student.regno,\",Reg.no : \",student.fees"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Reg.no :  1234 ,Reg.no :  320.17\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "13.4.1, page number:204"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "from collections import namedtuple\n",
+      "MyStruct = namedtuple(\"MyStruct\", \"regno fees\")\n",
+      "\n",
+      "integer = MyStruct(\"1234\", \"320.17\")\n",
+      "real = MyStruct(\"\",\"\")\n",
+      "real=real._replace(regno=integer.regno,fees=integer.fees)\n",
+      "\n",
+      "print \"Reg_no : \",real.regno,\",Reg.no : \",real.fees"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Reg_no :  1234 ,Reg.no :  320.17\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter13_8.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter13_8.ipynb
new file mode 100755
index 00000000..0c43b667
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter13_8.ipynb
@@ -0,0 +1,125 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:1ba129031b3dd7ed7efce1207bad751b6003f133c0f192eb72df391881da05bb"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "13:STRUCTURE AND UNIONS"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "13.2.1, page number:203"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "from collections import namedtuple\n",
+      "MyStruct = namedtuple(\"MyStruct\", \"regno fees\")\n",
+      "\n",
+      "integer = MyStruct(\"1234\", \" \")\n",
+      "real = MyStruct(\" \",\"320.17\")\n",
+      "integer=integer._replace(fees=real.fees)\n",
+      "real=real._replace(regno=integer.regno)\n",
+      "\n",
+      "print \"Reg_no : \",real.regno,\",Reg.no : \",integer.fees"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Reg_no :  1234 ,Reg.no :  320.17\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "13.3.1, page number:203"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "from collections import namedtuple\n",
+      "MyStruct = namedtuple(\"MyStruct\", \"regno fees\")\n",
+      "\n",
+      "\n",
+      "student = MyStruct(\"1234\", \"320.17\")\n",
+      "\n",
+      "print \"Reg.no : \",student.regno,\",Reg.no : \",student.fees"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Reg.no :  1234 ,Reg.no :  320.17\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "13.4.1, page number:204"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "from collections import namedtuple\n",
+      "MyStruct = namedtuple(\"MyStruct\", \"regno fees\")\n",
+      "\n",
+      "integer = MyStruct(\"1234\", \"320.17\")\n",
+      "real = MyStruct(\"\",\"\")\n",
+      "real=real._replace(regno=integer.regno,fees=integer.fees)\n",
+      "\n",
+      "print \"Reg_no : \",real.regno,\",Reg.no : \",real.fees"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Reg_no :  1234 ,Reg.no :  320.17\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter13_9.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter13_9.ipynb
new file mode 100755
index 00000000..0c43b667
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter13_9.ipynb
@@ -0,0 +1,125 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:1ba129031b3dd7ed7efce1207bad751b6003f133c0f192eb72df391881da05bb"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "13:STRUCTURE AND UNIONS"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "13.2.1, page number:203"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "from collections import namedtuple\n",
+      "MyStruct = namedtuple(\"MyStruct\", \"regno fees\")\n",
+      "\n",
+      "integer = MyStruct(\"1234\", \" \")\n",
+      "real = MyStruct(\" \",\"320.17\")\n",
+      "integer=integer._replace(fees=real.fees)\n",
+      "real=real._replace(regno=integer.regno)\n",
+      "\n",
+      "print \"Reg_no : \",real.regno,\",Reg.no : \",integer.fees"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Reg_no :  1234 ,Reg.no :  320.17\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "13.3.1, page number:203"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "from collections import namedtuple\n",
+      "MyStruct = namedtuple(\"MyStruct\", \"regno fees\")\n",
+      "\n",
+      "\n",
+      "student = MyStruct(\"1234\", \"320.17\")\n",
+      "\n",
+      "print \"Reg.no : \",student.regno,\",Reg.no : \",student.fees"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Reg.no :  1234 ,Reg.no :  320.17\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "13.4.1, page number:204"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "from collections import namedtuple\n",
+      "MyStruct = namedtuple(\"MyStruct\", \"regno fees\")\n",
+      "\n",
+      "integer = MyStruct(\"1234\", \"320.17\")\n",
+      "real = MyStruct(\"\",\"\")\n",
+      "real=real._replace(regno=integer.regno,fees=integer.fees)\n",
+      "\n",
+      "print \"Reg_no : \",real.regno,\",Reg.no : \",real.fees"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Reg_no :  1234 ,Reg.no :  320.17\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter15.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter15.ipynb
new file mode 100755
index 00000000..39ea0685
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter15.ipynb
@@ -0,0 +1,384 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:1653abf733b2f9f179249fa6301d56a0dc1802cab84a3f5e0ff6ee96488fe3f6"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "15:FILES"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.4.1, Page number:224"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "while True:\n",
+      "    print \"Enter Text\"\n",
+      "    c = raw_input()\n",
+      "    print 'Text entered is:'\n",
+      "    print c\n",
+      "    if c[-1] == '.':\n",
+      "        break"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Text\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "C programming language is modern and advanced;\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Text entered is:\n",
+        "C programming language is modern and advanced;\n",
+        "Enter Text\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "it enables addressing bits and bytes.\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Text entered is:\n",
+        "it enables addressing bits and bytes.\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.9.1, Page number:224"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def EOF():\n",
+      "    return -1\n",
+      "while True:\n",
+      "    print \"Enter Text\"\n",
+      "    c = raw_input()\n",
+      "    print 'Text entered is:'\n",
+      "    print c\n",
+      "    if c != EOF():\n",
+      "        break"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Text\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "madurai is a great city ,meenakshi temple is in the heart,millions of pilgrims visit the temple every year.\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Text entered is:\n",
+        "madurai is a great city ,meenakshi temple is in the heart,millions of pilgrims visit the temple every year.\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.10.1,page numebr:231"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Key in Text:\"\n",
+      "f = open('myfile','w')\n",
+      "c=str(raw_input())\n",
+      "f.write(c)\n",
+      "print \"The text is:\"\n",
+      "f = open('myfile','r')\n",
+      "print f.read()\n",
+      "f.close()"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Key in Text:\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Madurai city is famous for its historical mounaments and archives,every visitor must see these places.\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The text is:\n",
+        "Madurai city is famous for its historical mounaments and archives,every visitor must see these places.\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.12.1,page numebr:233"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def file_output(x):\n",
+      "    f=open(x,\"r\")\n",
+      "    print f.read()\n",
+      "original = open('stud_rec','w')\n",
+      "copy = open('image','a')\n",
+      "\n",
+      "original.write(\"Tirupparankundram\\n\")\n",
+      "copy.write(\"Tirupparankundram\\n\")\n",
+      "\n",
+      "original.close()\n",
+      "copy.close()\n",
+      "\n",
+      "print \"After adding input,stud_rec has: \"\n",
+      "file_output(\"stud_rec\")\n",
+      "print \"After append,image contains:\"\n",
+      "file_output(\"image\")\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "After adding input,stud_rec has: \n",
+        "Tirupparankundram\n",
+        "\n",
+        "After append,image contains:\n",
+        "Tirupparankundram\n",
+        "Tirupparankundram\n",
+        "\n"
+       ]
+      }
+     ],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.14.1,page number:237"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Type in the Text:\"\n",
+      "f = open('madurai','w')\n",
+      "c=str(raw_input())\n",
+      "f.write(c)\n",
+      "print \"The text read as:\"\n",
+      "f = open('madurai','r')\n",
+      "print f.read()\n",
+      "f.close()"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Type in the Text:\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi temple has no age\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The text read as:\n",
+        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi temple has no age\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.16.1,page number:239"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import os\n",
+      "import sys\n",
+      "import fileinput\n",
+      "import string\n",
+      "\n",
+      "print \"Madurai Contains :\"\n",
+      "f = open('madurai_1','r')\n",
+      "print f.read()\n",
+      "f.close()\n",
+      "\n",
+      "s = open(\"madurai_1\").read()\n",
+      "s = s.replace('temple', 'shrine')\n",
+      "f = open(\"madurai_1\", 'w')\n",
+      "f.write(s)\n",
+      "f.close()\n",
+      "\n",
+      "print \"Modified File now reads :\"\n",
+      "f = open('madurai_1','r')\n",
+      "print f.read()\n",
+      "f.close()"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Madurai Contains :\n",
+        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi temple has no age\n",
+        "\n",
+        "Modified File now reads :\n",
+        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi shrine has no age\n",
+        "\n"
+       ]
+      }
+     ],
+     "prompt_number": 7
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.18.1,page number:241"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import re\n",
+      "print \"Enter a stream of characters with integers embedded\"\n",
+      "c=raw_input()\n",
+      "print \"Integr is : \",re.sub(\"[^0-9]\", \"\", c)\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter a stream of characters with integers embedded\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "ab+&473.tce\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Integr is :  473\n"
+       ]
+      }
+     ],
+     "prompt_number": 8
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter15_1.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter15_1.ipynb
new file mode 100755
index 00000000..39ea0685
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter15_1.ipynb
@@ -0,0 +1,384 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:1653abf733b2f9f179249fa6301d56a0dc1802cab84a3f5e0ff6ee96488fe3f6"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "15:FILES"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.4.1, Page number:224"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "while True:\n",
+      "    print \"Enter Text\"\n",
+      "    c = raw_input()\n",
+      "    print 'Text entered is:'\n",
+      "    print c\n",
+      "    if c[-1] == '.':\n",
+      "        break"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Text\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "C programming language is modern and advanced;\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Text entered is:\n",
+        "C programming language is modern and advanced;\n",
+        "Enter Text\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "it enables addressing bits and bytes.\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Text entered is:\n",
+        "it enables addressing bits and bytes.\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.9.1, Page number:224"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def EOF():\n",
+      "    return -1\n",
+      "while True:\n",
+      "    print \"Enter Text\"\n",
+      "    c = raw_input()\n",
+      "    print 'Text entered is:'\n",
+      "    print c\n",
+      "    if c != EOF():\n",
+      "        break"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Text\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "madurai is a great city ,meenakshi temple is in the heart,millions of pilgrims visit the temple every year.\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Text entered is:\n",
+        "madurai is a great city ,meenakshi temple is in the heart,millions of pilgrims visit the temple every year.\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.10.1,page numebr:231"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Key in Text:\"\n",
+      "f = open('myfile','w')\n",
+      "c=str(raw_input())\n",
+      "f.write(c)\n",
+      "print \"The text is:\"\n",
+      "f = open('myfile','r')\n",
+      "print f.read()\n",
+      "f.close()"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Key in Text:\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Madurai city is famous for its historical mounaments and archives,every visitor must see these places.\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The text is:\n",
+        "Madurai city is famous for its historical mounaments and archives,every visitor must see these places.\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.12.1,page numebr:233"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def file_output(x):\n",
+      "    f=open(x,\"r\")\n",
+      "    print f.read()\n",
+      "original = open('stud_rec','w')\n",
+      "copy = open('image','a')\n",
+      "\n",
+      "original.write(\"Tirupparankundram\\n\")\n",
+      "copy.write(\"Tirupparankundram\\n\")\n",
+      "\n",
+      "original.close()\n",
+      "copy.close()\n",
+      "\n",
+      "print \"After adding input,stud_rec has: \"\n",
+      "file_output(\"stud_rec\")\n",
+      "print \"After append,image contains:\"\n",
+      "file_output(\"image\")\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "After adding input,stud_rec has: \n",
+        "Tirupparankundram\n",
+        "\n",
+        "After append,image contains:\n",
+        "Tirupparankundram\n",
+        "Tirupparankundram\n",
+        "\n"
+       ]
+      }
+     ],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.14.1,page number:237"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Type in the Text:\"\n",
+      "f = open('madurai','w')\n",
+      "c=str(raw_input())\n",
+      "f.write(c)\n",
+      "print \"The text read as:\"\n",
+      "f = open('madurai','r')\n",
+      "print f.read()\n",
+      "f.close()"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Type in the Text:\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi temple has no age\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The text read as:\n",
+        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi temple has no age\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.16.1,page number:239"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import os\n",
+      "import sys\n",
+      "import fileinput\n",
+      "import string\n",
+      "\n",
+      "print \"Madurai Contains :\"\n",
+      "f = open('madurai_1','r')\n",
+      "print f.read()\n",
+      "f.close()\n",
+      "\n",
+      "s = open(\"madurai_1\").read()\n",
+      "s = s.replace('temple', 'shrine')\n",
+      "f = open(\"madurai_1\", 'w')\n",
+      "f.write(s)\n",
+      "f.close()\n",
+      "\n",
+      "print \"Modified File now reads :\"\n",
+      "f = open('madurai_1','r')\n",
+      "print f.read()\n",
+      "f.close()"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Madurai Contains :\n",
+        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi temple has no age\n",
+        "\n",
+        "Modified File now reads :\n",
+        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi shrine has no age\n",
+        "\n"
+       ]
+      }
+     ],
+     "prompt_number": 7
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.18.1,page number:241"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import re\n",
+      "print \"Enter a stream of characters with integers embedded\"\n",
+      "c=raw_input()\n",
+      "print \"Integr is : \",re.sub(\"[^0-9]\", \"\", c)\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter a stream of characters with integers embedded\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "ab+&473.tce\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Integr is :  473\n"
+       ]
+      }
+     ],
+     "prompt_number": 8
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter15_10.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter15_10.ipynb
new file mode 100755
index 00000000..39ea0685
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter15_10.ipynb
@@ -0,0 +1,384 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:1653abf733b2f9f179249fa6301d56a0dc1802cab84a3f5e0ff6ee96488fe3f6"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "15:FILES"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.4.1, Page number:224"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "while True:\n",
+      "    print \"Enter Text\"\n",
+      "    c = raw_input()\n",
+      "    print 'Text entered is:'\n",
+      "    print c\n",
+      "    if c[-1] == '.':\n",
+      "        break"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Text\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "C programming language is modern and advanced;\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Text entered is:\n",
+        "C programming language is modern and advanced;\n",
+        "Enter Text\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "it enables addressing bits and bytes.\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Text entered is:\n",
+        "it enables addressing bits and bytes.\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.9.1, Page number:224"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def EOF():\n",
+      "    return -1\n",
+      "while True:\n",
+      "    print \"Enter Text\"\n",
+      "    c = raw_input()\n",
+      "    print 'Text entered is:'\n",
+      "    print c\n",
+      "    if c != EOF():\n",
+      "        break"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Text\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "madurai is a great city ,meenakshi temple is in the heart,millions of pilgrims visit the temple every year.\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Text entered is:\n",
+        "madurai is a great city ,meenakshi temple is in the heart,millions of pilgrims visit the temple every year.\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.10.1,page numebr:231"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Key in Text:\"\n",
+      "f = open('myfile','w')\n",
+      "c=str(raw_input())\n",
+      "f.write(c)\n",
+      "print \"The text is:\"\n",
+      "f = open('myfile','r')\n",
+      "print f.read()\n",
+      "f.close()"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Key in Text:\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Madurai city is famous for its historical mounaments and archives,every visitor must see these places.\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The text is:\n",
+        "Madurai city is famous for its historical mounaments and archives,every visitor must see these places.\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.12.1,page numebr:233"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def file_output(x):\n",
+      "    f=open(x,\"r\")\n",
+      "    print f.read()\n",
+      "original = open('stud_rec','w')\n",
+      "copy = open('image','a')\n",
+      "\n",
+      "original.write(\"Tirupparankundram\\n\")\n",
+      "copy.write(\"Tirupparankundram\\n\")\n",
+      "\n",
+      "original.close()\n",
+      "copy.close()\n",
+      "\n",
+      "print \"After adding input,stud_rec has: \"\n",
+      "file_output(\"stud_rec\")\n",
+      "print \"After append,image contains:\"\n",
+      "file_output(\"image\")\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "After adding input,stud_rec has: \n",
+        "Tirupparankundram\n",
+        "\n",
+        "After append,image contains:\n",
+        "Tirupparankundram\n",
+        "Tirupparankundram\n",
+        "\n"
+       ]
+      }
+     ],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.14.1,page number:237"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Type in the Text:\"\n",
+      "f = open('madurai','w')\n",
+      "c=str(raw_input())\n",
+      "f.write(c)\n",
+      "print \"The text read as:\"\n",
+      "f = open('madurai','r')\n",
+      "print f.read()\n",
+      "f.close()"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Type in the Text:\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi temple has no age\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The text read as:\n",
+        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi temple has no age\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.16.1,page number:239"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import os\n",
+      "import sys\n",
+      "import fileinput\n",
+      "import string\n",
+      "\n",
+      "print \"Madurai Contains :\"\n",
+      "f = open('madurai_1','r')\n",
+      "print f.read()\n",
+      "f.close()\n",
+      "\n",
+      "s = open(\"madurai_1\").read()\n",
+      "s = s.replace('temple', 'shrine')\n",
+      "f = open(\"madurai_1\", 'w')\n",
+      "f.write(s)\n",
+      "f.close()\n",
+      "\n",
+      "print \"Modified File now reads :\"\n",
+      "f = open('madurai_1','r')\n",
+      "print f.read()\n",
+      "f.close()"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Madurai Contains :\n",
+        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi temple has no age\n",
+        "\n",
+        "Modified File now reads :\n",
+        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi shrine has no age\n",
+        "\n"
+       ]
+      }
+     ],
+     "prompt_number": 7
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.18.1,page number:241"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import re\n",
+      "print \"Enter a stream of characters with integers embedded\"\n",
+      "c=raw_input()\n",
+      "print \"Integr is : \",re.sub(\"[^0-9]\", \"\", c)\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter a stream of characters with integers embedded\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "ab+&473.tce\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Integr is :  473\n"
+       ]
+      }
+     ],
+     "prompt_number": 8
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter15_11.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter15_11.ipynb
new file mode 100755
index 00000000..39ea0685
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter15_11.ipynb
@@ -0,0 +1,384 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:1653abf733b2f9f179249fa6301d56a0dc1802cab84a3f5e0ff6ee96488fe3f6"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "15:FILES"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.4.1, Page number:224"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "while True:\n",
+      "    print \"Enter Text\"\n",
+      "    c = raw_input()\n",
+      "    print 'Text entered is:'\n",
+      "    print c\n",
+      "    if c[-1] == '.':\n",
+      "        break"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Text\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "C programming language is modern and advanced;\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Text entered is:\n",
+        "C programming language is modern and advanced;\n",
+        "Enter Text\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "it enables addressing bits and bytes.\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Text entered is:\n",
+        "it enables addressing bits and bytes.\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.9.1, Page number:224"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def EOF():\n",
+      "    return -1\n",
+      "while True:\n",
+      "    print \"Enter Text\"\n",
+      "    c = raw_input()\n",
+      "    print 'Text entered is:'\n",
+      "    print c\n",
+      "    if c != EOF():\n",
+      "        break"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Text\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "madurai is a great city ,meenakshi temple is in the heart,millions of pilgrims visit the temple every year.\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Text entered is:\n",
+        "madurai is a great city ,meenakshi temple is in the heart,millions of pilgrims visit the temple every year.\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.10.1,page numebr:231"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Key in Text:\"\n",
+      "f = open('myfile','w')\n",
+      "c=str(raw_input())\n",
+      "f.write(c)\n",
+      "print \"The text is:\"\n",
+      "f = open('myfile','r')\n",
+      "print f.read()\n",
+      "f.close()"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Key in Text:\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Madurai city is famous for its historical mounaments and archives,every visitor must see these places.\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The text is:\n",
+        "Madurai city is famous for its historical mounaments and archives,every visitor must see these places.\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.12.1,page numebr:233"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def file_output(x):\n",
+      "    f=open(x,\"r\")\n",
+      "    print f.read()\n",
+      "original = open('stud_rec','w')\n",
+      "copy = open('image','a')\n",
+      "\n",
+      "original.write(\"Tirupparankundram\\n\")\n",
+      "copy.write(\"Tirupparankundram\\n\")\n",
+      "\n",
+      "original.close()\n",
+      "copy.close()\n",
+      "\n",
+      "print \"After adding input,stud_rec has: \"\n",
+      "file_output(\"stud_rec\")\n",
+      "print \"After append,image contains:\"\n",
+      "file_output(\"image\")\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "After adding input,stud_rec has: \n",
+        "Tirupparankundram\n",
+        "\n",
+        "After append,image contains:\n",
+        "Tirupparankundram\n",
+        "Tirupparankundram\n",
+        "\n"
+       ]
+      }
+     ],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.14.1,page number:237"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Type in the Text:\"\n",
+      "f = open('madurai','w')\n",
+      "c=str(raw_input())\n",
+      "f.write(c)\n",
+      "print \"The text read as:\"\n",
+      "f = open('madurai','r')\n",
+      "print f.read()\n",
+      "f.close()"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Type in the Text:\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi temple has no age\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The text read as:\n",
+        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi temple has no age\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.16.1,page number:239"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import os\n",
+      "import sys\n",
+      "import fileinput\n",
+      "import string\n",
+      "\n",
+      "print \"Madurai Contains :\"\n",
+      "f = open('madurai_1','r')\n",
+      "print f.read()\n",
+      "f.close()\n",
+      "\n",
+      "s = open(\"madurai_1\").read()\n",
+      "s = s.replace('temple', 'shrine')\n",
+      "f = open(\"madurai_1\", 'w')\n",
+      "f.write(s)\n",
+      "f.close()\n",
+      "\n",
+      "print \"Modified File now reads :\"\n",
+      "f = open('madurai_1','r')\n",
+      "print f.read()\n",
+      "f.close()"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Madurai Contains :\n",
+        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi temple has no age\n",
+        "\n",
+        "Modified File now reads :\n",
+        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi shrine has no age\n",
+        "\n"
+       ]
+      }
+     ],
+     "prompt_number": 7
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.18.1,page number:241"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import re\n",
+      "print \"Enter a stream of characters with integers embedded\"\n",
+      "c=raw_input()\n",
+      "print \"Integr is : \",re.sub(\"[^0-9]\", \"\", c)\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter a stream of characters with integers embedded\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "ab+&473.tce\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Integr is :  473\n"
+       ]
+      }
+     ],
+     "prompt_number": 8
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter15_12.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter15_12.ipynb
new file mode 100755
index 00000000..39ea0685
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter15_12.ipynb
@@ -0,0 +1,384 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:1653abf733b2f9f179249fa6301d56a0dc1802cab84a3f5e0ff6ee96488fe3f6"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "15:FILES"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.4.1, Page number:224"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "while True:\n",
+      "    print \"Enter Text\"\n",
+      "    c = raw_input()\n",
+      "    print 'Text entered is:'\n",
+      "    print c\n",
+      "    if c[-1] == '.':\n",
+      "        break"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Text\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "C programming language is modern and advanced;\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Text entered is:\n",
+        "C programming language is modern and advanced;\n",
+        "Enter Text\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "it enables addressing bits and bytes.\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Text entered is:\n",
+        "it enables addressing bits and bytes.\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.9.1, Page number:224"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def EOF():\n",
+      "    return -1\n",
+      "while True:\n",
+      "    print \"Enter Text\"\n",
+      "    c = raw_input()\n",
+      "    print 'Text entered is:'\n",
+      "    print c\n",
+      "    if c != EOF():\n",
+      "        break"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Text\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "madurai is a great city ,meenakshi temple is in the heart,millions of pilgrims visit the temple every year.\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Text entered is:\n",
+        "madurai is a great city ,meenakshi temple is in the heart,millions of pilgrims visit the temple every year.\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.10.1,page numebr:231"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Key in Text:\"\n",
+      "f = open('myfile','w')\n",
+      "c=str(raw_input())\n",
+      "f.write(c)\n",
+      "print \"The text is:\"\n",
+      "f = open('myfile','r')\n",
+      "print f.read()\n",
+      "f.close()"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Key in Text:\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Madurai city is famous for its historical mounaments and archives,every visitor must see these places.\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The text is:\n",
+        "Madurai city is famous for its historical mounaments and archives,every visitor must see these places.\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.12.1,page numebr:233"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def file_output(x):\n",
+      "    f=open(x,\"r\")\n",
+      "    print f.read()\n",
+      "original = open('stud_rec','w')\n",
+      "copy = open('image','a')\n",
+      "\n",
+      "original.write(\"Tirupparankundram\\n\")\n",
+      "copy.write(\"Tirupparankundram\\n\")\n",
+      "\n",
+      "original.close()\n",
+      "copy.close()\n",
+      "\n",
+      "print \"After adding input,stud_rec has: \"\n",
+      "file_output(\"stud_rec\")\n",
+      "print \"After append,image contains:\"\n",
+      "file_output(\"image\")\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "After adding input,stud_rec has: \n",
+        "Tirupparankundram\n",
+        "\n",
+        "After append,image contains:\n",
+        "Tirupparankundram\n",
+        "Tirupparankundram\n",
+        "\n"
+       ]
+      }
+     ],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.14.1,page number:237"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Type in the Text:\"\n",
+      "f = open('madurai','w')\n",
+      "c=str(raw_input())\n",
+      "f.write(c)\n",
+      "print \"The text read as:\"\n",
+      "f = open('madurai','r')\n",
+      "print f.read()\n",
+      "f.close()"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Type in the Text:\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi temple has no age\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The text read as:\n",
+        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi temple has no age\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.16.1,page number:239"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import os\n",
+      "import sys\n",
+      "import fileinput\n",
+      "import string\n",
+      "\n",
+      "print \"Madurai Contains :\"\n",
+      "f = open('madurai_1','r')\n",
+      "print f.read()\n",
+      "f.close()\n",
+      "\n",
+      "s = open(\"madurai_1\").read()\n",
+      "s = s.replace('temple', 'shrine')\n",
+      "f = open(\"madurai_1\", 'w')\n",
+      "f.write(s)\n",
+      "f.close()\n",
+      "\n",
+      "print \"Modified File now reads :\"\n",
+      "f = open('madurai_1','r')\n",
+      "print f.read()\n",
+      "f.close()"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Madurai Contains :\n",
+        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi temple has no age\n",
+        "\n",
+        "Modified File now reads :\n",
+        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi shrine has no age\n",
+        "\n"
+       ]
+      }
+     ],
+     "prompt_number": 7
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.18.1,page number:241"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import re\n",
+      "print \"Enter a stream of characters with integers embedded\"\n",
+      "c=raw_input()\n",
+      "print \"Integr is : \",re.sub(\"[^0-9]\", \"\", c)\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter a stream of characters with integers embedded\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "ab+&473.tce\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Integr is :  473\n"
+       ]
+      }
+     ],
+     "prompt_number": 8
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter15_13.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter15_13.ipynb
new file mode 100755
index 00000000..39ea0685
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter15_13.ipynb
@@ -0,0 +1,384 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:1653abf733b2f9f179249fa6301d56a0dc1802cab84a3f5e0ff6ee96488fe3f6"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "15:FILES"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.4.1, Page number:224"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "while True:\n",
+      "    print \"Enter Text\"\n",
+      "    c = raw_input()\n",
+      "    print 'Text entered is:'\n",
+      "    print c\n",
+      "    if c[-1] == '.':\n",
+      "        break"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Text\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "C programming language is modern and advanced;\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Text entered is:\n",
+        "C programming language is modern and advanced;\n",
+        "Enter Text\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "it enables addressing bits and bytes.\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Text entered is:\n",
+        "it enables addressing bits and bytes.\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.9.1, Page number:224"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def EOF():\n",
+      "    return -1\n",
+      "while True:\n",
+      "    print \"Enter Text\"\n",
+      "    c = raw_input()\n",
+      "    print 'Text entered is:'\n",
+      "    print c\n",
+      "    if c != EOF():\n",
+      "        break"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Text\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "madurai is a great city ,meenakshi temple is in the heart,millions of pilgrims visit the temple every year.\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Text entered is:\n",
+        "madurai is a great city ,meenakshi temple is in the heart,millions of pilgrims visit the temple every year.\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.10.1,page numebr:231"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Key in Text:\"\n",
+      "f = open('myfile','w')\n",
+      "c=str(raw_input())\n",
+      "f.write(c)\n",
+      "print \"The text is:\"\n",
+      "f = open('myfile','r')\n",
+      "print f.read()\n",
+      "f.close()"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Key in Text:\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Madurai city is famous for its historical mounaments and archives,every visitor must see these places.\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The text is:\n",
+        "Madurai city is famous for its historical mounaments and archives,every visitor must see these places.\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.12.1,page numebr:233"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def file_output(x):\n",
+      "    f=open(x,\"r\")\n",
+      "    print f.read()\n",
+      "original = open('stud_rec','w')\n",
+      "copy = open('image','a')\n",
+      "\n",
+      "original.write(\"Tirupparankundram\\n\")\n",
+      "copy.write(\"Tirupparankundram\\n\")\n",
+      "\n",
+      "original.close()\n",
+      "copy.close()\n",
+      "\n",
+      "print \"After adding input,stud_rec has: \"\n",
+      "file_output(\"stud_rec\")\n",
+      "print \"After append,image contains:\"\n",
+      "file_output(\"image\")\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "After adding input,stud_rec has: \n",
+        "Tirupparankundram\n",
+        "\n",
+        "After append,image contains:\n",
+        "Tirupparankundram\n",
+        "Tirupparankundram\n",
+        "\n"
+       ]
+      }
+     ],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.14.1,page number:237"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Type in the Text:\"\n",
+      "f = open('madurai','w')\n",
+      "c=str(raw_input())\n",
+      "f.write(c)\n",
+      "print \"The text read as:\"\n",
+      "f = open('madurai','r')\n",
+      "print f.read()\n",
+      "f.close()"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Type in the Text:\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi temple has no age\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The text read as:\n",
+        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi temple has no age\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.16.1,page number:239"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import os\n",
+      "import sys\n",
+      "import fileinput\n",
+      "import string\n",
+      "\n",
+      "print \"Madurai Contains :\"\n",
+      "f = open('madurai_1','r')\n",
+      "print f.read()\n",
+      "f.close()\n",
+      "\n",
+      "s = open(\"madurai_1\").read()\n",
+      "s = s.replace('temple', 'shrine')\n",
+      "f = open(\"madurai_1\", 'w')\n",
+      "f.write(s)\n",
+      "f.close()\n",
+      "\n",
+      "print \"Modified File now reads :\"\n",
+      "f = open('madurai_1','r')\n",
+      "print f.read()\n",
+      "f.close()"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Madurai Contains :\n",
+        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi temple has no age\n",
+        "\n",
+        "Modified File now reads :\n",
+        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi shrine has no age\n",
+        "\n"
+       ]
+      }
+     ],
+     "prompt_number": 7
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.18.1,page number:241"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import re\n",
+      "print \"Enter a stream of characters with integers embedded\"\n",
+      "c=raw_input()\n",
+      "print \"Integr is : \",re.sub(\"[^0-9]\", \"\", c)\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter a stream of characters with integers embedded\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "ab+&473.tce\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Integr is :  473\n"
+       ]
+      }
+     ],
+     "prompt_number": 8
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter15_14.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter15_14.ipynb
new file mode 100755
index 00000000..39ea0685
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter15_14.ipynb
@@ -0,0 +1,384 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:1653abf733b2f9f179249fa6301d56a0dc1802cab84a3f5e0ff6ee96488fe3f6"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "15:FILES"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.4.1, Page number:224"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "while True:\n",
+      "    print \"Enter Text\"\n",
+      "    c = raw_input()\n",
+      "    print 'Text entered is:'\n",
+      "    print c\n",
+      "    if c[-1] == '.':\n",
+      "        break"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Text\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "C programming language is modern and advanced;\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Text entered is:\n",
+        "C programming language is modern and advanced;\n",
+        "Enter Text\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "it enables addressing bits and bytes.\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Text entered is:\n",
+        "it enables addressing bits and bytes.\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.9.1, Page number:224"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def EOF():\n",
+      "    return -1\n",
+      "while True:\n",
+      "    print \"Enter Text\"\n",
+      "    c = raw_input()\n",
+      "    print 'Text entered is:'\n",
+      "    print c\n",
+      "    if c != EOF():\n",
+      "        break"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Text\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "madurai is a great city ,meenakshi temple is in the heart,millions of pilgrims visit the temple every year.\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Text entered is:\n",
+        "madurai is a great city ,meenakshi temple is in the heart,millions of pilgrims visit the temple every year.\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.10.1,page numebr:231"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Key in Text:\"\n",
+      "f = open('myfile','w')\n",
+      "c=str(raw_input())\n",
+      "f.write(c)\n",
+      "print \"The text is:\"\n",
+      "f = open('myfile','r')\n",
+      "print f.read()\n",
+      "f.close()"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Key in Text:\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Madurai city is famous for its historical mounaments and archives,every visitor must see these places.\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The text is:\n",
+        "Madurai city is famous for its historical mounaments and archives,every visitor must see these places.\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.12.1,page numebr:233"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def file_output(x):\n",
+      "    f=open(x,\"r\")\n",
+      "    print f.read()\n",
+      "original = open('stud_rec','w')\n",
+      "copy = open('image','a')\n",
+      "\n",
+      "original.write(\"Tirupparankundram\\n\")\n",
+      "copy.write(\"Tirupparankundram\\n\")\n",
+      "\n",
+      "original.close()\n",
+      "copy.close()\n",
+      "\n",
+      "print \"After adding input,stud_rec has: \"\n",
+      "file_output(\"stud_rec\")\n",
+      "print \"After append,image contains:\"\n",
+      "file_output(\"image\")\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "After adding input,stud_rec has: \n",
+        "Tirupparankundram\n",
+        "\n",
+        "After append,image contains:\n",
+        "Tirupparankundram\n",
+        "Tirupparankundram\n",
+        "\n"
+       ]
+      }
+     ],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.14.1,page number:237"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Type in the Text:\"\n",
+      "f = open('madurai','w')\n",
+      "c=str(raw_input())\n",
+      "f.write(c)\n",
+      "print \"The text read as:\"\n",
+      "f = open('madurai','r')\n",
+      "print f.read()\n",
+      "f.close()"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Type in the Text:\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi temple has no age\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The text read as:\n",
+        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi temple has no age\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.16.1,page number:239"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import os\n",
+      "import sys\n",
+      "import fileinput\n",
+      "import string\n",
+      "\n",
+      "print \"Madurai Contains :\"\n",
+      "f = open('madurai_1','r')\n",
+      "print f.read()\n",
+      "f.close()\n",
+      "\n",
+      "s = open(\"madurai_1\").read()\n",
+      "s = s.replace('temple', 'shrine')\n",
+      "f = open(\"madurai_1\", 'w')\n",
+      "f.write(s)\n",
+      "f.close()\n",
+      "\n",
+      "print \"Modified File now reads :\"\n",
+      "f = open('madurai_1','r')\n",
+      "print f.read()\n",
+      "f.close()"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Madurai Contains :\n",
+        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi temple has no age\n",
+        "\n",
+        "Modified File now reads :\n",
+        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi shrine has no age\n",
+        "\n"
+       ]
+      }
+     ],
+     "prompt_number": 7
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.18.1,page number:241"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import re\n",
+      "print \"Enter a stream of characters with integers embedded\"\n",
+      "c=raw_input()\n",
+      "print \"Integr is : \",re.sub(\"[^0-9]\", \"\", c)\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter a stream of characters with integers embedded\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "ab+&473.tce\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Integr is :  473\n"
+       ]
+      }
+     ],
+     "prompt_number": 8
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter15_15.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter15_15.ipynb
new file mode 100755
index 00000000..39ea0685
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter15_15.ipynb
@@ -0,0 +1,384 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:1653abf733b2f9f179249fa6301d56a0dc1802cab84a3f5e0ff6ee96488fe3f6"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "15:FILES"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.4.1, Page number:224"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "while True:\n",
+      "    print \"Enter Text\"\n",
+      "    c = raw_input()\n",
+      "    print 'Text entered is:'\n",
+      "    print c\n",
+      "    if c[-1] == '.':\n",
+      "        break"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Text\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "C programming language is modern and advanced;\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Text entered is:\n",
+        "C programming language is modern and advanced;\n",
+        "Enter Text\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "it enables addressing bits and bytes.\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Text entered is:\n",
+        "it enables addressing bits and bytes.\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.9.1, Page number:224"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def EOF():\n",
+      "    return -1\n",
+      "while True:\n",
+      "    print \"Enter Text\"\n",
+      "    c = raw_input()\n",
+      "    print 'Text entered is:'\n",
+      "    print c\n",
+      "    if c != EOF():\n",
+      "        break"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Text\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "madurai is a great city ,meenakshi temple is in the heart,millions of pilgrims visit the temple every year.\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Text entered is:\n",
+        "madurai is a great city ,meenakshi temple is in the heart,millions of pilgrims visit the temple every year.\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.10.1,page numebr:231"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Key in Text:\"\n",
+      "f = open('myfile','w')\n",
+      "c=str(raw_input())\n",
+      "f.write(c)\n",
+      "print \"The text is:\"\n",
+      "f = open('myfile','r')\n",
+      "print f.read()\n",
+      "f.close()"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Key in Text:\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Madurai city is famous for its historical mounaments and archives,every visitor must see these places.\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The text is:\n",
+        "Madurai city is famous for its historical mounaments and archives,every visitor must see these places.\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.12.1,page numebr:233"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def file_output(x):\n",
+      "    f=open(x,\"r\")\n",
+      "    print f.read()\n",
+      "original = open('stud_rec','w')\n",
+      "copy = open('image','a')\n",
+      "\n",
+      "original.write(\"Tirupparankundram\\n\")\n",
+      "copy.write(\"Tirupparankundram\\n\")\n",
+      "\n",
+      "original.close()\n",
+      "copy.close()\n",
+      "\n",
+      "print \"After adding input,stud_rec has: \"\n",
+      "file_output(\"stud_rec\")\n",
+      "print \"After append,image contains:\"\n",
+      "file_output(\"image\")\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "After adding input,stud_rec has: \n",
+        "Tirupparankundram\n",
+        "\n",
+        "After append,image contains:\n",
+        "Tirupparankundram\n",
+        "Tirupparankundram\n",
+        "\n"
+       ]
+      }
+     ],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.14.1,page number:237"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Type in the Text:\"\n",
+      "f = open('madurai','w')\n",
+      "c=str(raw_input())\n",
+      "f.write(c)\n",
+      "print \"The text read as:\"\n",
+      "f = open('madurai','r')\n",
+      "print f.read()\n",
+      "f.close()"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Type in the Text:\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi temple has no age\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The text read as:\n",
+        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi temple has no age\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.16.1,page number:239"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import os\n",
+      "import sys\n",
+      "import fileinput\n",
+      "import string\n",
+      "\n",
+      "print \"Madurai Contains :\"\n",
+      "f = open('madurai_1','r')\n",
+      "print f.read()\n",
+      "f.close()\n",
+      "\n",
+      "s = open(\"madurai_1\").read()\n",
+      "s = s.replace('temple', 'shrine')\n",
+      "f = open(\"madurai_1\", 'w')\n",
+      "f.write(s)\n",
+      "f.close()\n",
+      "\n",
+      "print \"Modified File now reads :\"\n",
+      "f = open('madurai_1','r')\n",
+      "print f.read()\n",
+      "f.close()"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Madurai Contains :\n",
+        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi temple has no age\n",
+        "\n",
+        "Modified File now reads :\n",
+        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi shrine has no age\n",
+        "\n"
+       ]
+      }
+     ],
+     "prompt_number": 7
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.18.1,page number:241"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import re\n",
+      "print \"Enter a stream of characters with integers embedded\"\n",
+      "c=raw_input()\n",
+      "print \"Integr is : \",re.sub(\"[^0-9]\", \"\", c)\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter a stream of characters with integers embedded\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "ab+&473.tce\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Integr is :  473\n"
+       ]
+      }
+     ],
+     "prompt_number": 8
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter15_2.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter15_2.ipynb
new file mode 100755
index 00000000..39ea0685
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter15_2.ipynb
@@ -0,0 +1,384 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:1653abf733b2f9f179249fa6301d56a0dc1802cab84a3f5e0ff6ee96488fe3f6"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "15:FILES"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.4.1, Page number:224"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "while True:\n",
+      "    print \"Enter Text\"\n",
+      "    c = raw_input()\n",
+      "    print 'Text entered is:'\n",
+      "    print c\n",
+      "    if c[-1] == '.':\n",
+      "        break"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Text\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "C programming language is modern and advanced;\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Text entered is:\n",
+        "C programming language is modern and advanced;\n",
+        "Enter Text\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "it enables addressing bits and bytes.\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Text entered is:\n",
+        "it enables addressing bits and bytes.\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.9.1, Page number:224"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def EOF():\n",
+      "    return -1\n",
+      "while True:\n",
+      "    print \"Enter Text\"\n",
+      "    c = raw_input()\n",
+      "    print 'Text entered is:'\n",
+      "    print c\n",
+      "    if c != EOF():\n",
+      "        break"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Text\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "madurai is a great city ,meenakshi temple is in the heart,millions of pilgrims visit the temple every year.\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Text entered is:\n",
+        "madurai is a great city ,meenakshi temple is in the heart,millions of pilgrims visit the temple every year.\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.10.1,page numebr:231"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Key in Text:\"\n",
+      "f = open('myfile','w')\n",
+      "c=str(raw_input())\n",
+      "f.write(c)\n",
+      "print \"The text is:\"\n",
+      "f = open('myfile','r')\n",
+      "print f.read()\n",
+      "f.close()"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Key in Text:\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Madurai city is famous for its historical mounaments and archives,every visitor must see these places.\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The text is:\n",
+        "Madurai city is famous for its historical mounaments and archives,every visitor must see these places.\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.12.1,page numebr:233"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def file_output(x):\n",
+      "    f=open(x,\"r\")\n",
+      "    print f.read()\n",
+      "original = open('stud_rec','w')\n",
+      "copy = open('image','a')\n",
+      "\n",
+      "original.write(\"Tirupparankundram\\n\")\n",
+      "copy.write(\"Tirupparankundram\\n\")\n",
+      "\n",
+      "original.close()\n",
+      "copy.close()\n",
+      "\n",
+      "print \"After adding input,stud_rec has: \"\n",
+      "file_output(\"stud_rec\")\n",
+      "print \"After append,image contains:\"\n",
+      "file_output(\"image\")\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "After adding input,stud_rec has: \n",
+        "Tirupparankundram\n",
+        "\n",
+        "After append,image contains:\n",
+        "Tirupparankundram\n",
+        "Tirupparankundram\n",
+        "\n"
+       ]
+      }
+     ],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.14.1,page number:237"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Type in the Text:\"\n",
+      "f = open('madurai','w')\n",
+      "c=str(raw_input())\n",
+      "f.write(c)\n",
+      "print \"The text read as:\"\n",
+      "f = open('madurai','r')\n",
+      "print f.read()\n",
+      "f.close()"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Type in the Text:\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi temple has no age\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The text read as:\n",
+        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi temple has no age\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.16.1,page number:239"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import os\n",
+      "import sys\n",
+      "import fileinput\n",
+      "import string\n",
+      "\n",
+      "print \"Madurai Contains :\"\n",
+      "f = open('madurai_1','r')\n",
+      "print f.read()\n",
+      "f.close()\n",
+      "\n",
+      "s = open(\"madurai_1\").read()\n",
+      "s = s.replace('temple', 'shrine')\n",
+      "f = open(\"madurai_1\", 'w')\n",
+      "f.write(s)\n",
+      "f.close()\n",
+      "\n",
+      "print \"Modified File now reads :\"\n",
+      "f = open('madurai_1','r')\n",
+      "print f.read()\n",
+      "f.close()"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Madurai Contains :\n",
+        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi temple has no age\n",
+        "\n",
+        "Modified File now reads :\n",
+        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi shrine has no age\n",
+        "\n"
+       ]
+      }
+     ],
+     "prompt_number": 7
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.18.1,page number:241"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import re\n",
+      "print \"Enter a stream of characters with integers embedded\"\n",
+      "c=raw_input()\n",
+      "print \"Integr is : \",re.sub(\"[^0-9]\", \"\", c)\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter a stream of characters with integers embedded\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "ab+&473.tce\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Integr is :  473\n"
+       ]
+      }
+     ],
+     "prompt_number": 8
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter15_3.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter15_3.ipynb
new file mode 100755
index 00000000..39ea0685
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter15_3.ipynb
@@ -0,0 +1,384 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:1653abf733b2f9f179249fa6301d56a0dc1802cab84a3f5e0ff6ee96488fe3f6"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "15:FILES"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.4.1, Page number:224"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "while True:\n",
+      "    print \"Enter Text\"\n",
+      "    c = raw_input()\n",
+      "    print 'Text entered is:'\n",
+      "    print c\n",
+      "    if c[-1] == '.':\n",
+      "        break"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Text\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "C programming language is modern and advanced;\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Text entered is:\n",
+        "C programming language is modern and advanced;\n",
+        "Enter Text\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "it enables addressing bits and bytes.\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Text entered is:\n",
+        "it enables addressing bits and bytes.\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.9.1, Page number:224"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def EOF():\n",
+      "    return -1\n",
+      "while True:\n",
+      "    print \"Enter Text\"\n",
+      "    c = raw_input()\n",
+      "    print 'Text entered is:'\n",
+      "    print c\n",
+      "    if c != EOF():\n",
+      "        break"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Text\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "madurai is a great city ,meenakshi temple is in the heart,millions of pilgrims visit the temple every year.\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Text entered is:\n",
+        "madurai is a great city ,meenakshi temple is in the heart,millions of pilgrims visit the temple every year.\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.10.1,page numebr:231"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Key in Text:\"\n",
+      "f = open('myfile','w')\n",
+      "c=str(raw_input())\n",
+      "f.write(c)\n",
+      "print \"The text is:\"\n",
+      "f = open('myfile','r')\n",
+      "print f.read()\n",
+      "f.close()"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Key in Text:\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Madurai city is famous for its historical mounaments and archives,every visitor must see these places.\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The text is:\n",
+        "Madurai city is famous for its historical mounaments and archives,every visitor must see these places.\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.12.1,page numebr:233"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def file_output(x):\n",
+      "    f=open(x,\"r\")\n",
+      "    print f.read()\n",
+      "original = open('stud_rec','w')\n",
+      "copy = open('image','a')\n",
+      "\n",
+      "original.write(\"Tirupparankundram\\n\")\n",
+      "copy.write(\"Tirupparankundram\\n\")\n",
+      "\n",
+      "original.close()\n",
+      "copy.close()\n",
+      "\n",
+      "print \"After adding input,stud_rec has: \"\n",
+      "file_output(\"stud_rec\")\n",
+      "print \"After append,image contains:\"\n",
+      "file_output(\"image\")\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "After adding input,stud_rec has: \n",
+        "Tirupparankundram\n",
+        "\n",
+        "After append,image contains:\n",
+        "Tirupparankundram\n",
+        "Tirupparankundram\n",
+        "\n"
+       ]
+      }
+     ],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.14.1,page number:237"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Type in the Text:\"\n",
+      "f = open('madurai','w')\n",
+      "c=str(raw_input())\n",
+      "f.write(c)\n",
+      "print \"The text read as:\"\n",
+      "f = open('madurai','r')\n",
+      "print f.read()\n",
+      "f.close()"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Type in the Text:\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi temple has no age\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The text read as:\n",
+        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi temple has no age\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.16.1,page number:239"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import os\n",
+      "import sys\n",
+      "import fileinput\n",
+      "import string\n",
+      "\n",
+      "print \"Madurai Contains :\"\n",
+      "f = open('madurai_1','r')\n",
+      "print f.read()\n",
+      "f.close()\n",
+      "\n",
+      "s = open(\"madurai_1\").read()\n",
+      "s = s.replace('temple', 'shrine')\n",
+      "f = open(\"madurai_1\", 'w')\n",
+      "f.write(s)\n",
+      "f.close()\n",
+      "\n",
+      "print \"Modified File now reads :\"\n",
+      "f = open('madurai_1','r')\n",
+      "print f.read()\n",
+      "f.close()"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Madurai Contains :\n",
+        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi temple has no age\n",
+        "\n",
+        "Modified File now reads :\n",
+        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi shrine has no age\n",
+        "\n"
+       ]
+      }
+     ],
+     "prompt_number": 7
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.18.1,page number:241"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import re\n",
+      "print \"Enter a stream of characters with integers embedded\"\n",
+      "c=raw_input()\n",
+      "print \"Integr is : \",re.sub(\"[^0-9]\", \"\", c)\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter a stream of characters with integers embedded\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "ab+&473.tce\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Integr is :  473\n"
+       ]
+      }
+     ],
+     "prompt_number": 8
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter15_4.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter15_4.ipynb
new file mode 100755
index 00000000..39ea0685
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter15_4.ipynb
@@ -0,0 +1,384 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:1653abf733b2f9f179249fa6301d56a0dc1802cab84a3f5e0ff6ee96488fe3f6"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "15:FILES"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.4.1, Page number:224"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "while True:\n",
+      "    print \"Enter Text\"\n",
+      "    c = raw_input()\n",
+      "    print 'Text entered is:'\n",
+      "    print c\n",
+      "    if c[-1] == '.':\n",
+      "        break"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Text\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "C programming language is modern and advanced;\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Text entered is:\n",
+        "C programming language is modern and advanced;\n",
+        "Enter Text\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "it enables addressing bits and bytes.\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Text entered is:\n",
+        "it enables addressing bits and bytes.\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.9.1, Page number:224"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def EOF():\n",
+      "    return -1\n",
+      "while True:\n",
+      "    print \"Enter Text\"\n",
+      "    c = raw_input()\n",
+      "    print 'Text entered is:'\n",
+      "    print c\n",
+      "    if c != EOF():\n",
+      "        break"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Text\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "madurai is a great city ,meenakshi temple is in the heart,millions of pilgrims visit the temple every year.\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Text entered is:\n",
+        "madurai is a great city ,meenakshi temple is in the heart,millions of pilgrims visit the temple every year.\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.10.1,page numebr:231"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Key in Text:\"\n",
+      "f = open('myfile','w')\n",
+      "c=str(raw_input())\n",
+      "f.write(c)\n",
+      "print \"The text is:\"\n",
+      "f = open('myfile','r')\n",
+      "print f.read()\n",
+      "f.close()"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Key in Text:\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Madurai city is famous for its historical mounaments and archives,every visitor must see these places.\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The text is:\n",
+        "Madurai city is famous for its historical mounaments and archives,every visitor must see these places.\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.12.1,page numebr:233"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def file_output(x):\n",
+      "    f=open(x,\"r\")\n",
+      "    print f.read()\n",
+      "original = open('stud_rec','w')\n",
+      "copy = open('image','a')\n",
+      "\n",
+      "original.write(\"Tirupparankundram\\n\")\n",
+      "copy.write(\"Tirupparankundram\\n\")\n",
+      "\n",
+      "original.close()\n",
+      "copy.close()\n",
+      "\n",
+      "print \"After adding input,stud_rec has: \"\n",
+      "file_output(\"stud_rec\")\n",
+      "print \"After append,image contains:\"\n",
+      "file_output(\"image\")\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "After adding input,stud_rec has: \n",
+        "Tirupparankundram\n",
+        "\n",
+        "After append,image contains:\n",
+        "Tirupparankundram\n",
+        "Tirupparankundram\n",
+        "\n"
+       ]
+      }
+     ],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.14.1,page number:237"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Type in the Text:\"\n",
+      "f = open('madurai','w')\n",
+      "c=str(raw_input())\n",
+      "f.write(c)\n",
+      "print \"The text read as:\"\n",
+      "f = open('madurai','r')\n",
+      "print f.read()\n",
+      "f.close()"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Type in the Text:\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi temple has no age\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The text read as:\n",
+        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi temple has no age\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.16.1,page number:239"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import os\n",
+      "import sys\n",
+      "import fileinput\n",
+      "import string\n",
+      "\n",
+      "print \"Madurai Contains :\"\n",
+      "f = open('madurai_1','r')\n",
+      "print f.read()\n",
+      "f.close()\n",
+      "\n",
+      "s = open(\"madurai_1\").read()\n",
+      "s = s.replace('temple', 'shrine')\n",
+      "f = open(\"madurai_1\", 'w')\n",
+      "f.write(s)\n",
+      "f.close()\n",
+      "\n",
+      "print \"Modified File now reads :\"\n",
+      "f = open('madurai_1','r')\n",
+      "print f.read()\n",
+      "f.close()"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Madurai Contains :\n",
+        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi temple has no age\n",
+        "\n",
+        "Modified File now reads :\n",
+        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi shrine has no age\n",
+        "\n"
+       ]
+      }
+     ],
+     "prompt_number": 7
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.18.1,page number:241"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import re\n",
+      "print \"Enter a stream of characters with integers embedded\"\n",
+      "c=raw_input()\n",
+      "print \"Integr is : \",re.sub(\"[^0-9]\", \"\", c)\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter a stream of characters with integers embedded\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "ab+&473.tce\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Integr is :  473\n"
+       ]
+      }
+     ],
+     "prompt_number": 8
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter15_5.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter15_5.ipynb
new file mode 100755
index 00000000..39ea0685
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter15_5.ipynb
@@ -0,0 +1,384 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:1653abf733b2f9f179249fa6301d56a0dc1802cab84a3f5e0ff6ee96488fe3f6"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "15:FILES"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.4.1, Page number:224"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "while True:\n",
+      "    print \"Enter Text\"\n",
+      "    c = raw_input()\n",
+      "    print 'Text entered is:'\n",
+      "    print c\n",
+      "    if c[-1] == '.':\n",
+      "        break"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Text\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "C programming language is modern and advanced;\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Text entered is:\n",
+        "C programming language is modern and advanced;\n",
+        "Enter Text\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "it enables addressing bits and bytes.\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Text entered is:\n",
+        "it enables addressing bits and bytes.\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.9.1, Page number:224"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def EOF():\n",
+      "    return -1\n",
+      "while True:\n",
+      "    print \"Enter Text\"\n",
+      "    c = raw_input()\n",
+      "    print 'Text entered is:'\n",
+      "    print c\n",
+      "    if c != EOF():\n",
+      "        break"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Text\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "madurai is a great city ,meenakshi temple is in the heart,millions of pilgrims visit the temple every year.\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Text entered is:\n",
+        "madurai is a great city ,meenakshi temple is in the heart,millions of pilgrims visit the temple every year.\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.10.1,page numebr:231"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Key in Text:\"\n",
+      "f = open('myfile','w')\n",
+      "c=str(raw_input())\n",
+      "f.write(c)\n",
+      "print \"The text is:\"\n",
+      "f = open('myfile','r')\n",
+      "print f.read()\n",
+      "f.close()"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Key in Text:\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Madurai city is famous for its historical mounaments and archives,every visitor must see these places.\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The text is:\n",
+        "Madurai city is famous for its historical mounaments and archives,every visitor must see these places.\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.12.1,page numebr:233"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def file_output(x):\n",
+      "    f=open(x,\"r\")\n",
+      "    print f.read()\n",
+      "original = open('stud_rec','w')\n",
+      "copy = open('image','a')\n",
+      "\n",
+      "original.write(\"Tirupparankundram\\n\")\n",
+      "copy.write(\"Tirupparankundram\\n\")\n",
+      "\n",
+      "original.close()\n",
+      "copy.close()\n",
+      "\n",
+      "print \"After adding input,stud_rec has: \"\n",
+      "file_output(\"stud_rec\")\n",
+      "print \"After append,image contains:\"\n",
+      "file_output(\"image\")\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "After adding input,stud_rec has: \n",
+        "Tirupparankundram\n",
+        "\n",
+        "After append,image contains:\n",
+        "Tirupparankundram\n",
+        "Tirupparankundram\n",
+        "\n"
+       ]
+      }
+     ],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.14.1,page number:237"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Type in the Text:\"\n",
+      "f = open('madurai','w')\n",
+      "c=str(raw_input())\n",
+      "f.write(c)\n",
+      "print \"The text read as:\"\n",
+      "f = open('madurai','r')\n",
+      "print f.read()\n",
+      "f.close()"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Type in the Text:\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi temple has no age\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The text read as:\n",
+        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi temple has no age\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.16.1,page number:239"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import os\n",
+      "import sys\n",
+      "import fileinput\n",
+      "import string\n",
+      "\n",
+      "print \"Madurai Contains :\"\n",
+      "f = open('madurai_1','r')\n",
+      "print f.read()\n",
+      "f.close()\n",
+      "\n",
+      "s = open(\"madurai_1\").read()\n",
+      "s = s.replace('temple', 'shrine')\n",
+      "f = open(\"madurai_1\", 'w')\n",
+      "f.write(s)\n",
+      "f.close()\n",
+      "\n",
+      "print \"Modified File now reads :\"\n",
+      "f = open('madurai_1','r')\n",
+      "print f.read()\n",
+      "f.close()"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Madurai Contains :\n",
+        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi temple has no age\n",
+        "\n",
+        "Modified File now reads :\n",
+        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi shrine has no age\n",
+        "\n"
+       ]
+      }
+     ],
+     "prompt_number": 7
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.18.1,page number:241"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import re\n",
+      "print \"Enter a stream of characters with integers embedded\"\n",
+      "c=raw_input()\n",
+      "print \"Integr is : \",re.sub(\"[^0-9]\", \"\", c)\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter a stream of characters with integers embedded\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "ab+&473.tce\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Integr is :  473\n"
+       ]
+      }
+     ],
+     "prompt_number": 8
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter15_6.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter15_6.ipynb
new file mode 100755
index 00000000..39ea0685
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter15_6.ipynb
@@ -0,0 +1,384 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:1653abf733b2f9f179249fa6301d56a0dc1802cab84a3f5e0ff6ee96488fe3f6"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "15:FILES"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.4.1, Page number:224"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "while True:\n",
+      "    print \"Enter Text\"\n",
+      "    c = raw_input()\n",
+      "    print 'Text entered is:'\n",
+      "    print c\n",
+      "    if c[-1] == '.':\n",
+      "        break"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Text\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "C programming language is modern and advanced;\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Text entered is:\n",
+        "C programming language is modern and advanced;\n",
+        "Enter Text\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "it enables addressing bits and bytes.\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Text entered is:\n",
+        "it enables addressing bits and bytes.\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.9.1, Page number:224"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def EOF():\n",
+      "    return -1\n",
+      "while True:\n",
+      "    print \"Enter Text\"\n",
+      "    c = raw_input()\n",
+      "    print 'Text entered is:'\n",
+      "    print c\n",
+      "    if c != EOF():\n",
+      "        break"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Text\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "madurai is a great city ,meenakshi temple is in the heart,millions of pilgrims visit the temple every year.\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Text entered is:\n",
+        "madurai is a great city ,meenakshi temple is in the heart,millions of pilgrims visit the temple every year.\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.10.1,page numebr:231"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Key in Text:\"\n",
+      "f = open('myfile','w')\n",
+      "c=str(raw_input())\n",
+      "f.write(c)\n",
+      "print \"The text is:\"\n",
+      "f = open('myfile','r')\n",
+      "print f.read()\n",
+      "f.close()"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Key in Text:\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Madurai city is famous for its historical mounaments and archives,every visitor must see these places.\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The text is:\n",
+        "Madurai city is famous for its historical mounaments and archives,every visitor must see these places.\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.12.1,page numebr:233"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def file_output(x):\n",
+      "    f=open(x,\"r\")\n",
+      "    print f.read()\n",
+      "original = open('stud_rec','w')\n",
+      "copy = open('image','a')\n",
+      "\n",
+      "original.write(\"Tirupparankundram\\n\")\n",
+      "copy.write(\"Tirupparankundram\\n\")\n",
+      "\n",
+      "original.close()\n",
+      "copy.close()\n",
+      "\n",
+      "print \"After adding input,stud_rec has: \"\n",
+      "file_output(\"stud_rec\")\n",
+      "print \"After append,image contains:\"\n",
+      "file_output(\"image\")\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "After adding input,stud_rec has: \n",
+        "Tirupparankundram\n",
+        "\n",
+        "After append,image contains:\n",
+        "Tirupparankundram\n",
+        "Tirupparankundram\n",
+        "\n"
+       ]
+      }
+     ],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.14.1,page number:237"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Type in the Text:\"\n",
+      "f = open('madurai','w')\n",
+      "c=str(raw_input())\n",
+      "f.write(c)\n",
+      "print \"The text read as:\"\n",
+      "f = open('madurai','r')\n",
+      "print f.read()\n",
+      "f.close()"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Type in the Text:\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi temple has no age\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The text read as:\n",
+        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi temple has no age\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.16.1,page number:239"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import os\n",
+      "import sys\n",
+      "import fileinput\n",
+      "import string\n",
+      "\n",
+      "print \"Madurai Contains :\"\n",
+      "f = open('madurai_1','r')\n",
+      "print f.read()\n",
+      "f.close()\n",
+      "\n",
+      "s = open(\"madurai_1\").read()\n",
+      "s = s.replace('temple', 'shrine')\n",
+      "f = open(\"madurai_1\", 'w')\n",
+      "f.write(s)\n",
+      "f.close()\n",
+      "\n",
+      "print \"Modified File now reads :\"\n",
+      "f = open('madurai_1','r')\n",
+      "print f.read()\n",
+      "f.close()"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Madurai Contains :\n",
+        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi temple has no age\n",
+        "\n",
+        "Modified File now reads :\n",
+        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi shrine has no age\n",
+        "\n"
+       ]
+      }
+     ],
+     "prompt_number": 7
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.18.1,page number:241"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import re\n",
+      "print \"Enter a stream of characters with integers embedded\"\n",
+      "c=raw_input()\n",
+      "print \"Integr is : \",re.sub(\"[^0-9]\", \"\", c)\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter a stream of characters with integers embedded\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "ab+&473.tce\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Integr is :  473\n"
+       ]
+      }
+     ],
+     "prompt_number": 8
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter15_7.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter15_7.ipynb
new file mode 100755
index 00000000..39ea0685
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter15_7.ipynb
@@ -0,0 +1,384 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:1653abf733b2f9f179249fa6301d56a0dc1802cab84a3f5e0ff6ee96488fe3f6"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "15:FILES"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.4.1, Page number:224"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "while True:\n",
+      "    print \"Enter Text\"\n",
+      "    c = raw_input()\n",
+      "    print 'Text entered is:'\n",
+      "    print c\n",
+      "    if c[-1] == '.':\n",
+      "        break"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Text\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "C programming language is modern and advanced;\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Text entered is:\n",
+        "C programming language is modern and advanced;\n",
+        "Enter Text\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "it enables addressing bits and bytes.\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Text entered is:\n",
+        "it enables addressing bits and bytes.\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.9.1, Page number:224"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def EOF():\n",
+      "    return -1\n",
+      "while True:\n",
+      "    print \"Enter Text\"\n",
+      "    c = raw_input()\n",
+      "    print 'Text entered is:'\n",
+      "    print c\n",
+      "    if c != EOF():\n",
+      "        break"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Text\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "madurai is a great city ,meenakshi temple is in the heart,millions of pilgrims visit the temple every year.\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Text entered is:\n",
+        "madurai is a great city ,meenakshi temple is in the heart,millions of pilgrims visit the temple every year.\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.10.1,page numebr:231"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Key in Text:\"\n",
+      "f = open('myfile','w')\n",
+      "c=str(raw_input())\n",
+      "f.write(c)\n",
+      "print \"The text is:\"\n",
+      "f = open('myfile','r')\n",
+      "print f.read()\n",
+      "f.close()"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Key in Text:\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Madurai city is famous for its historical mounaments and archives,every visitor must see these places.\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The text is:\n",
+        "Madurai city is famous for its historical mounaments and archives,every visitor must see these places.\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.12.1,page numebr:233"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def file_output(x):\n",
+      "    f=open(x,\"r\")\n",
+      "    print f.read()\n",
+      "original = open('stud_rec','w')\n",
+      "copy = open('image','a')\n",
+      "\n",
+      "original.write(\"Tirupparankundram\\n\")\n",
+      "copy.write(\"Tirupparankundram\\n\")\n",
+      "\n",
+      "original.close()\n",
+      "copy.close()\n",
+      "\n",
+      "print \"After adding input,stud_rec has: \"\n",
+      "file_output(\"stud_rec\")\n",
+      "print \"After append,image contains:\"\n",
+      "file_output(\"image\")\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "After adding input,stud_rec has: \n",
+        "Tirupparankundram\n",
+        "\n",
+        "After append,image contains:\n",
+        "Tirupparankundram\n",
+        "Tirupparankundram\n",
+        "\n"
+       ]
+      }
+     ],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.14.1,page number:237"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Type in the Text:\"\n",
+      "f = open('madurai','w')\n",
+      "c=str(raw_input())\n",
+      "f.write(c)\n",
+      "print \"The text read as:\"\n",
+      "f = open('madurai','r')\n",
+      "print f.read()\n",
+      "f.close()"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Type in the Text:\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi temple has no age\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The text read as:\n",
+        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi temple has no age\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.16.1,page number:239"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import os\n",
+      "import sys\n",
+      "import fileinput\n",
+      "import string\n",
+      "\n",
+      "print \"Madurai Contains :\"\n",
+      "f = open('madurai_1','r')\n",
+      "print f.read()\n",
+      "f.close()\n",
+      "\n",
+      "s = open(\"madurai_1\").read()\n",
+      "s = s.replace('temple', 'shrine')\n",
+      "f = open(\"madurai_1\", 'w')\n",
+      "f.write(s)\n",
+      "f.close()\n",
+      "\n",
+      "print \"Modified File now reads :\"\n",
+      "f = open('madurai_1','r')\n",
+      "print f.read()\n",
+      "f.close()"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Madurai Contains :\n",
+        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi temple has no age\n",
+        "\n",
+        "Modified File now reads :\n",
+        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi shrine has no age\n",
+        "\n"
+       ]
+      }
+     ],
+     "prompt_number": 7
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.18.1,page number:241"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import re\n",
+      "print \"Enter a stream of characters with integers embedded\"\n",
+      "c=raw_input()\n",
+      "print \"Integr is : \",re.sub(\"[^0-9]\", \"\", c)\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter a stream of characters with integers embedded\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "ab+&473.tce\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Integr is :  473\n"
+       ]
+      }
+     ],
+     "prompt_number": 8
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter15_8.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter15_8.ipynb
new file mode 100755
index 00000000..39ea0685
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter15_8.ipynb
@@ -0,0 +1,384 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:1653abf733b2f9f179249fa6301d56a0dc1802cab84a3f5e0ff6ee96488fe3f6"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "15:FILES"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.4.1, Page number:224"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "while True:\n",
+      "    print \"Enter Text\"\n",
+      "    c = raw_input()\n",
+      "    print 'Text entered is:'\n",
+      "    print c\n",
+      "    if c[-1] == '.':\n",
+      "        break"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Text\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "C programming language is modern and advanced;\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Text entered is:\n",
+        "C programming language is modern and advanced;\n",
+        "Enter Text\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "it enables addressing bits and bytes.\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Text entered is:\n",
+        "it enables addressing bits and bytes.\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.9.1, Page number:224"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def EOF():\n",
+      "    return -1\n",
+      "while True:\n",
+      "    print \"Enter Text\"\n",
+      "    c = raw_input()\n",
+      "    print 'Text entered is:'\n",
+      "    print c\n",
+      "    if c != EOF():\n",
+      "        break"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Text\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "madurai is a great city ,meenakshi temple is in the heart,millions of pilgrims visit the temple every year.\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Text entered is:\n",
+        "madurai is a great city ,meenakshi temple is in the heart,millions of pilgrims visit the temple every year.\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.10.1,page numebr:231"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Key in Text:\"\n",
+      "f = open('myfile','w')\n",
+      "c=str(raw_input())\n",
+      "f.write(c)\n",
+      "print \"The text is:\"\n",
+      "f = open('myfile','r')\n",
+      "print f.read()\n",
+      "f.close()"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Key in Text:\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Madurai city is famous for its historical mounaments and archives,every visitor must see these places.\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The text is:\n",
+        "Madurai city is famous for its historical mounaments and archives,every visitor must see these places.\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.12.1,page numebr:233"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def file_output(x):\n",
+      "    f=open(x,\"r\")\n",
+      "    print f.read()\n",
+      "original = open('stud_rec','w')\n",
+      "copy = open('image','a')\n",
+      "\n",
+      "original.write(\"Tirupparankundram\\n\")\n",
+      "copy.write(\"Tirupparankundram\\n\")\n",
+      "\n",
+      "original.close()\n",
+      "copy.close()\n",
+      "\n",
+      "print \"After adding input,stud_rec has: \"\n",
+      "file_output(\"stud_rec\")\n",
+      "print \"After append,image contains:\"\n",
+      "file_output(\"image\")\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "After adding input,stud_rec has: \n",
+        "Tirupparankundram\n",
+        "\n",
+        "After append,image contains:\n",
+        "Tirupparankundram\n",
+        "Tirupparankundram\n",
+        "\n"
+       ]
+      }
+     ],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.14.1,page number:237"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Type in the Text:\"\n",
+      "f = open('madurai','w')\n",
+      "c=str(raw_input())\n",
+      "f.write(c)\n",
+      "print \"The text read as:\"\n",
+      "f = open('madurai','r')\n",
+      "print f.read()\n",
+      "f.close()"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Type in the Text:\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi temple has no age\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The text read as:\n",
+        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi temple has no age\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.16.1,page number:239"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import os\n",
+      "import sys\n",
+      "import fileinput\n",
+      "import string\n",
+      "\n",
+      "print \"Madurai Contains :\"\n",
+      "f = open('madurai_1','r')\n",
+      "print f.read()\n",
+      "f.close()\n",
+      "\n",
+      "s = open(\"madurai_1\").read()\n",
+      "s = s.replace('temple', 'shrine')\n",
+      "f = open(\"madurai_1\", 'w')\n",
+      "f.write(s)\n",
+      "f.close()\n",
+      "\n",
+      "print \"Modified File now reads :\"\n",
+      "f = open('madurai_1','r')\n",
+      "print f.read()\n",
+      "f.close()"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Madurai Contains :\n",
+        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi temple has no age\n",
+        "\n",
+        "Modified File now reads :\n",
+        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi shrine has no age\n",
+        "\n"
+       ]
+      }
+     ],
+     "prompt_number": 7
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.18.1,page number:241"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import re\n",
+      "print \"Enter a stream of characters with integers embedded\"\n",
+      "c=raw_input()\n",
+      "print \"Integr is : \",re.sub(\"[^0-9]\", \"\", c)\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter a stream of characters with integers embedded\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "ab+&473.tce\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Integr is :  473\n"
+       ]
+      }
+     ],
+     "prompt_number": 8
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter15_9.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter15_9.ipynb
new file mode 100755
index 00000000..39ea0685
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter15_9.ipynb
@@ -0,0 +1,384 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:1653abf733b2f9f179249fa6301d56a0dc1802cab84a3f5e0ff6ee96488fe3f6"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "15:FILES"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.4.1, Page number:224"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "while True:\n",
+      "    print \"Enter Text\"\n",
+      "    c = raw_input()\n",
+      "    print 'Text entered is:'\n",
+      "    print c\n",
+      "    if c[-1] == '.':\n",
+      "        break"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Text\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "C programming language is modern and advanced;\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Text entered is:\n",
+        "C programming language is modern and advanced;\n",
+        "Enter Text\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "it enables addressing bits and bytes.\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Text entered is:\n",
+        "it enables addressing bits and bytes.\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.9.1, Page number:224"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def EOF():\n",
+      "    return -1\n",
+      "while True:\n",
+      "    print \"Enter Text\"\n",
+      "    c = raw_input()\n",
+      "    print 'Text entered is:'\n",
+      "    print c\n",
+      "    if c != EOF():\n",
+      "        break"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Text\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "madurai is a great city ,meenakshi temple is in the heart,millions of pilgrims visit the temple every year.\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Text entered is:\n",
+        "madurai is a great city ,meenakshi temple is in the heart,millions of pilgrims visit the temple every year.\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.10.1,page numebr:231"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Key in Text:\"\n",
+      "f = open('myfile','w')\n",
+      "c=str(raw_input())\n",
+      "f.write(c)\n",
+      "print \"The text is:\"\n",
+      "f = open('myfile','r')\n",
+      "print f.read()\n",
+      "f.close()"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Key in Text:\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Madurai city is famous for its historical mounaments and archives,every visitor must see these places.\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The text is:\n",
+        "Madurai city is famous for its historical mounaments and archives,every visitor must see these places.\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.12.1,page numebr:233"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def file_output(x):\n",
+      "    f=open(x,\"r\")\n",
+      "    print f.read()\n",
+      "original = open('stud_rec','w')\n",
+      "copy = open('image','a')\n",
+      "\n",
+      "original.write(\"Tirupparankundram\\n\")\n",
+      "copy.write(\"Tirupparankundram\\n\")\n",
+      "\n",
+      "original.close()\n",
+      "copy.close()\n",
+      "\n",
+      "print \"After adding input,stud_rec has: \"\n",
+      "file_output(\"stud_rec\")\n",
+      "print \"After append,image contains:\"\n",
+      "file_output(\"image\")\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "After adding input,stud_rec has: \n",
+        "Tirupparankundram\n",
+        "\n",
+        "After append,image contains:\n",
+        "Tirupparankundram\n",
+        "Tirupparankundram\n",
+        "\n"
+       ]
+      }
+     ],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.14.1,page number:237"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Type in the Text:\"\n",
+      "f = open('madurai','w')\n",
+      "c=str(raw_input())\n",
+      "f.write(c)\n",
+      "print \"The text read as:\"\n",
+      "f = open('madurai','r')\n",
+      "print f.read()\n",
+      "f.close()"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Type in the Text:\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi temple has no age\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The text read as:\n",
+        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi temple has no age\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.16.1,page number:239"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import os\n",
+      "import sys\n",
+      "import fileinput\n",
+      "import string\n",
+      "\n",
+      "print \"Madurai Contains :\"\n",
+      "f = open('madurai_1','r')\n",
+      "print f.read()\n",
+      "f.close()\n",
+      "\n",
+      "s = open(\"madurai_1\").read()\n",
+      "s = s.replace('temple', 'shrine')\n",
+      "f = open(\"madurai_1\", 'w')\n",
+      "f.write(s)\n",
+      "f.close()\n",
+      "\n",
+      "print \"Modified File now reads :\"\n",
+      "f = open('madurai_1','r')\n",
+      "print f.read()\n",
+      "f.close()"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Madurai Contains :\n",
+        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi temple has no age\n",
+        "\n",
+        "Modified File now reads :\n",
+        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi shrine has no age\n",
+        "\n"
+       ]
+      }
+     ],
+     "prompt_number": 7
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "15.18.1,page number:241"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import re\n",
+      "print \"Enter a stream of characters with integers embedded\"\n",
+      "c=raw_input()\n",
+      "print \"Integr is : \",re.sub(\"[^0-9]\", \"\", c)\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter a stream of characters with integers embedded\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "ab+&473.tce\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Integr is :  473\n"
+       ]
+      }
+     ],
+     "prompt_number": 8
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter5.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter5.ipynb
new file mode 100755
index 00000000..3371a2b1
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter5.ipynb
@@ -0,0 +1,50 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:fc199f6967bdaa418c011f64a9259bafc6cecf83675a6e55fed36bd7ff1a9671"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "5:C PROGRAMMING"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "5.3,page number:124"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Welcome to C programming.\"\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Welcome to C programming.\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter5_1.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter5_1.ipynb
new file mode 100755
index 00000000..3371a2b1
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter5_1.ipynb
@@ -0,0 +1,50 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:fc199f6967bdaa418c011f64a9259bafc6cecf83675a6e55fed36bd7ff1a9671"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "5:C PROGRAMMING"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "5.3,page number:124"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Welcome to C programming.\"\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Welcome to C programming.\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter5_10.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter5_10.ipynb
new file mode 100755
index 00000000..3371a2b1
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter5_10.ipynb
@@ -0,0 +1,50 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:fc199f6967bdaa418c011f64a9259bafc6cecf83675a6e55fed36bd7ff1a9671"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "5:C PROGRAMMING"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "5.3,page number:124"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Welcome to C programming.\"\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Welcome to C programming.\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter5_11.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter5_11.ipynb
new file mode 100755
index 00000000..3371a2b1
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter5_11.ipynb
@@ -0,0 +1,50 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:fc199f6967bdaa418c011f64a9259bafc6cecf83675a6e55fed36bd7ff1a9671"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "5:C PROGRAMMING"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "5.3,page number:124"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Welcome to C programming.\"\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Welcome to C programming.\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter5_12.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter5_12.ipynb
new file mode 100755
index 00000000..3371a2b1
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter5_12.ipynb
@@ -0,0 +1,50 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:fc199f6967bdaa418c011f64a9259bafc6cecf83675a6e55fed36bd7ff1a9671"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "5:C PROGRAMMING"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "5.3,page number:124"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Welcome to C programming.\"\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Welcome to C programming.\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter5_13.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter5_13.ipynb
new file mode 100755
index 00000000..3371a2b1
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter5_13.ipynb
@@ -0,0 +1,50 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:fc199f6967bdaa418c011f64a9259bafc6cecf83675a6e55fed36bd7ff1a9671"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "5:C PROGRAMMING"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "5.3,page number:124"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Welcome to C programming.\"\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Welcome to C programming.\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter5_14.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter5_14.ipynb
new file mode 100755
index 00000000..3371a2b1
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter5_14.ipynb
@@ -0,0 +1,50 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:fc199f6967bdaa418c011f64a9259bafc6cecf83675a6e55fed36bd7ff1a9671"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "5:C PROGRAMMING"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "5.3,page number:124"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Welcome to C programming.\"\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Welcome to C programming.\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter5_15.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter5_15.ipynb
new file mode 100755
index 00000000..3371a2b1
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter5_15.ipynb
@@ -0,0 +1,50 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:fc199f6967bdaa418c011f64a9259bafc6cecf83675a6e55fed36bd7ff1a9671"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "5:C PROGRAMMING"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "5.3,page number:124"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Welcome to C programming.\"\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Welcome to C programming.\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter5_2.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter5_2.ipynb
new file mode 100755
index 00000000..3371a2b1
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter5_2.ipynb
@@ -0,0 +1,50 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:fc199f6967bdaa418c011f64a9259bafc6cecf83675a6e55fed36bd7ff1a9671"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "5:C PROGRAMMING"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "5.3,page number:124"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Welcome to C programming.\"\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Welcome to C programming.\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter5_3.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter5_3.ipynb
new file mode 100755
index 00000000..3371a2b1
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter5_3.ipynb
@@ -0,0 +1,50 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:fc199f6967bdaa418c011f64a9259bafc6cecf83675a6e55fed36bd7ff1a9671"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "5:C PROGRAMMING"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "5.3,page number:124"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Welcome to C programming.\"\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Welcome to C programming.\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter5_4.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter5_4.ipynb
new file mode 100755
index 00000000..3371a2b1
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter5_4.ipynb
@@ -0,0 +1,50 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:fc199f6967bdaa418c011f64a9259bafc6cecf83675a6e55fed36bd7ff1a9671"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "5:C PROGRAMMING"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "5.3,page number:124"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Welcome to C programming.\"\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Welcome to C programming.\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter5_5.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter5_5.ipynb
new file mode 100755
index 00000000..3371a2b1
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter5_5.ipynb
@@ -0,0 +1,50 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:fc199f6967bdaa418c011f64a9259bafc6cecf83675a6e55fed36bd7ff1a9671"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "5:C PROGRAMMING"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "5.3,page number:124"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Welcome to C programming.\"\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Welcome to C programming.\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter5_6.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter5_6.ipynb
new file mode 100755
index 00000000..3371a2b1
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter5_6.ipynb
@@ -0,0 +1,50 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:fc199f6967bdaa418c011f64a9259bafc6cecf83675a6e55fed36bd7ff1a9671"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "5:C PROGRAMMING"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "5.3,page number:124"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Welcome to C programming.\"\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Welcome to C programming.\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter5_7.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter5_7.ipynb
new file mode 100755
index 00000000..3371a2b1
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter5_7.ipynb
@@ -0,0 +1,50 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:fc199f6967bdaa418c011f64a9259bafc6cecf83675a6e55fed36bd7ff1a9671"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "5:C PROGRAMMING"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "5.3,page number:124"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Welcome to C programming.\"\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Welcome to C programming.\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter5_8.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter5_8.ipynb
new file mode 100755
index 00000000..3371a2b1
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter5_8.ipynb
@@ -0,0 +1,50 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:fc199f6967bdaa418c011f64a9259bafc6cecf83675a6e55fed36bd7ff1a9671"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "5:C PROGRAMMING"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "5.3,page number:124"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Welcome to C programming.\"\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Welcome to C programming.\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter5_9.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter5_9.ipynb
new file mode 100755
index 00000000..3371a2b1
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter5_9.ipynb
@@ -0,0 +1,50 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:fc199f6967bdaa418c011f64a9259bafc6cecf83675a6e55fed36bd7ff1a9671"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "5:C PROGRAMMING"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "5.3,page number:124"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Welcome to C programming.\"\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Welcome to C programming.\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter6.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter6.ipynb
new file mode 100755
index 00000000..4c020690
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter6.ipynb
@@ -0,0 +1,161 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:47d59a62b2c6bacca8aa43f556c3c49e598b6b0b52b3cecb75f5587ebd7d9f66"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "6:CONSTANTS,VARIABLES"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "6.3.1,page number:140"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "m=4\n",
+      "n=6\n",
+      "p=8\n",
+      "result = m+n\n",
+      "print \"m+n=\",result\n",
+      "result = int (m/n)\n",
+      "print \"m/n=\",result\n",
+      "result = m*p\n",
+      "print \"m*p=\",result"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "m+n= 10\n",
+        "m/n= 0\n",
+        "m*p= 32\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "6.3.2,page number:141"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "m = 4\n",
+      "n = 6\n",
+      "p = 8\n",
+      "result= round(m+n-p*m+p/n,0)\n",
+      "print \"m=\",m,\",n=\",n,\",p=\",p\n",
+      "print \"m + n - p * m + p / n = \",result"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "m= 4 ,n= 6 ,p= 8\n",
+        "m + n - p * m + p / n =  -21.0\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "6.3.3,page number:142"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "m = 4\n",
+      "n = 6\n",
+      "print \" 6 mod 4 = \",n%m\n",
+      "print \"The modulus operator is : %\"\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        " 6 mod 4 =  2\n",
+        "The modulus operator is : %\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "6.3.4,page number:142"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "m = -4\n",
+      "n = 6\n",
+      "p = 8\n",
+      "print \"m=\",m,\" n=\",n,\" p=\",p\n",
+      "print \"gives\"\n",
+      "m=-m\n",
+      "n=-n\n",
+      "p=-p\n",
+      "print \"m=\",m,\" n=\",n,\" p=\",p"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "m= -4  n= 6  p= 8\n",
+        "gives\n",
+        "m= 4  n= -6  p= -8\n"
+       ]
+      }
+     ],
+     "prompt_number": 4
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter6_1.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter6_1.ipynb
new file mode 100755
index 00000000..4c020690
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter6_1.ipynb
@@ -0,0 +1,161 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:47d59a62b2c6bacca8aa43f556c3c49e598b6b0b52b3cecb75f5587ebd7d9f66"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "6:CONSTANTS,VARIABLES"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "6.3.1,page number:140"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "m=4\n",
+      "n=6\n",
+      "p=8\n",
+      "result = m+n\n",
+      "print \"m+n=\",result\n",
+      "result = int (m/n)\n",
+      "print \"m/n=\",result\n",
+      "result = m*p\n",
+      "print \"m*p=\",result"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "m+n= 10\n",
+        "m/n= 0\n",
+        "m*p= 32\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "6.3.2,page number:141"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "m = 4\n",
+      "n = 6\n",
+      "p = 8\n",
+      "result= round(m+n-p*m+p/n,0)\n",
+      "print \"m=\",m,\",n=\",n,\",p=\",p\n",
+      "print \"m + n - p * m + p / n = \",result"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "m= 4 ,n= 6 ,p= 8\n",
+        "m + n - p * m + p / n =  -21.0\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "6.3.3,page number:142"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "m = 4\n",
+      "n = 6\n",
+      "print \" 6 mod 4 = \",n%m\n",
+      "print \"The modulus operator is : %\"\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        " 6 mod 4 =  2\n",
+        "The modulus operator is : %\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "6.3.4,page number:142"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "m = -4\n",
+      "n = 6\n",
+      "p = 8\n",
+      "print \"m=\",m,\" n=\",n,\" p=\",p\n",
+      "print \"gives\"\n",
+      "m=-m\n",
+      "n=-n\n",
+      "p=-p\n",
+      "print \"m=\",m,\" n=\",n,\" p=\",p"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "m= -4  n= 6  p= 8\n",
+        "gives\n",
+        "m= 4  n= -6  p= -8\n"
+       ]
+      }
+     ],
+     "prompt_number": 4
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter6_10.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter6_10.ipynb
new file mode 100755
index 00000000..4c020690
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter6_10.ipynb
@@ -0,0 +1,161 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:47d59a62b2c6bacca8aa43f556c3c49e598b6b0b52b3cecb75f5587ebd7d9f66"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "6:CONSTANTS,VARIABLES"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "6.3.1,page number:140"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "m=4\n",
+      "n=6\n",
+      "p=8\n",
+      "result = m+n\n",
+      "print \"m+n=\",result\n",
+      "result = int (m/n)\n",
+      "print \"m/n=\",result\n",
+      "result = m*p\n",
+      "print \"m*p=\",result"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "m+n= 10\n",
+        "m/n= 0\n",
+        "m*p= 32\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "6.3.2,page number:141"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "m = 4\n",
+      "n = 6\n",
+      "p = 8\n",
+      "result= round(m+n-p*m+p/n,0)\n",
+      "print \"m=\",m,\",n=\",n,\",p=\",p\n",
+      "print \"m + n - p * m + p / n = \",result"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "m= 4 ,n= 6 ,p= 8\n",
+        "m + n - p * m + p / n =  -21.0\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "6.3.3,page number:142"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "m = 4\n",
+      "n = 6\n",
+      "print \" 6 mod 4 = \",n%m\n",
+      "print \"The modulus operator is : %\"\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        " 6 mod 4 =  2\n",
+        "The modulus operator is : %\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "6.3.4,page number:142"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "m = -4\n",
+      "n = 6\n",
+      "p = 8\n",
+      "print \"m=\",m,\" n=\",n,\" p=\",p\n",
+      "print \"gives\"\n",
+      "m=-m\n",
+      "n=-n\n",
+      "p=-p\n",
+      "print \"m=\",m,\" n=\",n,\" p=\",p"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "m= -4  n= 6  p= 8\n",
+        "gives\n",
+        "m= 4  n= -6  p= -8\n"
+       ]
+      }
+     ],
+     "prompt_number": 4
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter6_11.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter6_11.ipynb
new file mode 100755
index 00000000..4c020690
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter6_11.ipynb
@@ -0,0 +1,161 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:47d59a62b2c6bacca8aa43f556c3c49e598b6b0b52b3cecb75f5587ebd7d9f66"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "6:CONSTANTS,VARIABLES"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "6.3.1,page number:140"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "m=4\n",
+      "n=6\n",
+      "p=8\n",
+      "result = m+n\n",
+      "print \"m+n=\",result\n",
+      "result = int (m/n)\n",
+      "print \"m/n=\",result\n",
+      "result = m*p\n",
+      "print \"m*p=\",result"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "m+n= 10\n",
+        "m/n= 0\n",
+        "m*p= 32\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "6.3.2,page number:141"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "m = 4\n",
+      "n = 6\n",
+      "p = 8\n",
+      "result= round(m+n-p*m+p/n,0)\n",
+      "print \"m=\",m,\",n=\",n,\",p=\",p\n",
+      "print \"m + n - p * m + p / n = \",result"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "m= 4 ,n= 6 ,p= 8\n",
+        "m + n - p * m + p / n =  -21.0\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "6.3.3,page number:142"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "m = 4\n",
+      "n = 6\n",
+      "print \" 6 mod 4 = \",n%m\n",
+      "print \"The modulus operator is : %\"\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        " 6 mod 4 =  2\n",
+        "The modulus operator is : %\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "6.3.4,page number:142"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "m = -4\n",
+      "n = 6\n",
+      "p = 8\n",
+      "print \"m=\",m,\" n=\",n,\" p=\",p\n",
+      "print \"gives\"\n",
+      "m=-m\n",
+      "n=-n\n",
+      "p=-p\n",
+      "print \"m=\",m,\" n=\",n,\" p=\",p"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "m= -4  n= 6  p= 8\n",
+        "gives\n",
+        "m= 4  n= -6  p= -8\n"
+       ]
+      }
+     ],
+     "prompt_number": 4
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter6_12.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter6_12.ipynb
new file mode 100755
index 00000000..4c020690
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter6_12.ipynb
@@ -0,0 +1,161 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:47d59a62b2c6bacca8aa43f556c3c49e598b6b0b52b3cecb75f5587ebd7d9f66"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "6:CONSTANTS,VARIABLES"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "6.3.1,page number:140"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "m=4\n",
+      "n=6\n",
+      "p=8\n",
+      "result = m+n\n",
+      "print \"m+n=\",result\n",
+      "result = int (m/n)\n",
+      "print \"m/n=\",result\n",
+      "result = m*p\n",
+      "print \"m*p=\",result"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "m+n= 10\n",
+        "m/n= 0\n",
+        "m*p= 32\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "6.3.2,page number:141"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "m = 4\n",
+      "n = 6\n",
+      "p = 8\n",
+      "result= round(m+n-p*m+p/n,0)\n",
+      "print \"m=\",m,\",n=\",n,\",p=\",p\n",
+      "print \"m + n - p * m + p / n = \",result"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "m= 4 ,n= 6 ,p= 8\n",
+        "m + n - p * m + p / n =  -21.0\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "6.3.3,page number:142"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "m = 4\n",
+      "n = 6\n",
+      "print \" 6 mod 4 = \",n%m\n",
+      "print \"The modulus operator is : %\"\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        " 6 mod 4 =  2\n",
+        "The modulus operator is : %\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "6.3.4,page number:142"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "m = -4\n",
+      "n = 6\n",
+      "p = 8\n",
+      "print \"m=\",m,\" n=\",n,\" p=\",p\n",
+      "print \"gives\"\n",
+      "m=-m\n",
+      "n=-n\n",
+      "p=-p\n",
+      "print \"m=\",m,\" n=\",n,\" p=\",p"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "m= -4  n= 6  p= 8\n",
+        "gives\n",
+        "m= 4  n= -6  p= -8\n"
+       ]
+      }
+     ],
+     "prompt_number": 4
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter6_13.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter6_13.ipynb
new file mode 100755
index 00000000..4c020690
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter6_13.ipynb
@@ -0,0 +1,161 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:47d59a62b2c6bacca8aa43f556c3c49e598b6b0b52b3cecb75f5587ebd7d9f66"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "6:CONSTANTS,VARIABLES"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "6.3.1,page number:140"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "m=4\n",
+      "n=6\n",
+      "p=8\n",
+      "result = m+n\n",
+      "print \"m+n=\",result\n",
+      "result = int (m/n)\n",
+      "print \"m/n=\",result\n",
+      "result = m*p\n",
+      "print \"m*p=\",result"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "m+n= 10\n",
+        "m/n= 0\n",
+        "m*p= 32\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "6.3.2,page number:141"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "m = 4\n",
+      "n = 6\n",
+      "p = 8\n",
+      "result= round(m+n-p*m+p/n,0)\n",
+      "print \"m=\",m,\",n=\",n,\",p=\",p\n",
+      "print \"m + n - p * m + p / n = \",result"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "m= 4 ,n= 6 ,p= 8\n",
+        "m + n - p * m + p / n =  -21.0\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "6.3.3,page number:142"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "m = 4\n",
+      "n = 6\n",
+      "print \" 6 mod 4 = \",n%m\n",
+      "print \"The modulus operator is : %\"\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        " 6 mod 4 =  2\n",
+        "The modulus operator is : %\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "6.3.4,page number:142"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "m = -4\n",
+      "n = 6\n",
+      "p = 8\n",
+      "print \"m=\",m,\" n=\",n,\" p=\",p\n",
+      "print \"gives\"\n",
+      "m=-m\n",
+      "n=-n\n",
+      "p=-p\n",
+      "print \"m=\",m,\" n=\",n,\" p=\",p"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "m= -4  n= 6  p= 8\n",
+        "gives\n",
+        "m= 4  n= -6  p= -8\n"
+       ]
+      }
+     ],
+     "prompt_number": 4
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter6_14.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter6_14.ipynb
new file mode 100755
index 00000000..4c020690
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter6_14.ipynb
@@ -0,0 +1,161 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:47d59a62b2c6bacca8aa43f556c3c49e598b6b0b52b3cecb75f5587ebd7d9f66"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "6:CONSTANTS,VARIABLES"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "6.3.1,page number:140"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "m=4\n",
+      "n=6\n",
+      "p=8\n",
+      "result = m+n\n",
+      "print \"m+n=\",result\n",
+      "result = int (m/n)\n",
+      "print \"m/n=\",result\n",
+      "result = m*p\n",
+      "print \"m*p=\",result"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "m+n= 10\n",
+        "m/n= 0\n",
+        "m*p= 32\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "6.3.2,page number:141"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "m = 4\n",
+      "n = 6\n",
+      "p = 8\n",
+      "result= round(m+n-p*m+p/n,0)\n",
+      "print \"m=\",m,\",n=\",n,\",p=\",p\n",
+      "print \"m + n - p * m + p / n = \",result"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "m= 4 ,n= 6 ,p= 8\n",
+        "m + n - p * m + p / n =  -21.0\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "6.3.3,page number:142"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "m = 4\n",
+      "n = 6\n",
+      "print \" 6 mod 4 = \",n%m\n",
+      "print \"The modulus operator is : %\"\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        " 6 mod 4 =  2\n",
+        "The modulus operator is : %\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "6.3.4,page number:142"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "m = -4\n",
+      "n = 6\n",
+      "p = 8\n",
+      "print \"m=\",m,\" n=\",n,\" p=\",p\n",
+      "print \"gives\"\n",
+      "m=-m\n",
+      "n=-n\n",
+      "p=-p\n",
+      "print \"m=\",m,\" n=\",n,\" p=\",p"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "m= -4  n= 6  p= 8\n",
+        "gives\n",
+        "m= 4  n= -6  p= -8\n"
+       ]
+      }
+     ],
+     "prompt_number": 4
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter6_15.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter6_15.ipynb
new file mode 100755
index 00000000..4c020690
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter6_15.ipynb
@@ -0,0 +1,161 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:47d59a62b2c6bacca8aa43f556c3c49e598b6b0b52b3cecb75f5587ebd7d9f66"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "6:CONSTANTS,VARIABLES"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "6.3.1,page number:140"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "m=4\n",
+      "n=6\n",
+      "p=8\n",
+      "result = m+n\n",
+      "print \"m+n=\",result\n",
+      "result = int (m/n)\n",
+      "print \"m/n=\",result\n",
+      "result = m*p\n",
+      "print \"m*p=\",result"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "m+n= 10\n",
+        "m/n= 0\n",
+        "m*p= 32\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "6.3.2,page number:141"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "m = 4\n",
+      "n = 6\n",
+      "p = 8\n",
+      "result= round(m+n-p*m+p/n,0)\n",
+      "print \"m=\",m,\",n=\",n,\",p=\",p\n",
+      "print \"m + n - p * m + p / n = \",result"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "m= 4 ,n= 6 ,p= 8\n",
+        "m + n - p * m + p / n =  -21.0\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "6.3.3,page number:142"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "m = 4\n",
+      "n = 6\n",
+      "print \" 6 mod 4 = \",n%m\n",
+      "print \"The modulus operator is : %\"\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        " 6 mod 4 =  2\n",
+        "The modulus operator is : %\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "6.3.4,page number:142"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "m = -4\n",
+      "n = 6\n",
+      "p = 8\n",
+      "print \"m=\",m,\" n=\",n,\" p=\",p\n",
+      "print \"gives\"\n",
+      "m=-m\n",
+      "n=-n\n",
+      "p=-p\n",
+      "print \"m=\",m,\" n=\",n,\" p=\",p"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "m= -4  n= 6  p= 8\n",
+        "gives\n",
+        "m= 4  n= -6  p= -8\n"
+       ]
+      }
+     ],
+     "prompt_number": 4
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter6_2.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter6_2.ipynb
new file mode 100755
index 00000000..4c020690
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter6_2.ipynb
@@ -0,0 +1,161 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:47d59a62b2c6bacca8aa43f556c3c49e598b6b0b52b3cecb75f5587ebd7d9f66"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "6:CONSTANTS,VARIABLES"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "6.3.1,page number:140"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "m=4\n",
+      "n=6\n",
+      "p=8\n",
+      "result = m+n\n",
+      "print \"m+n=\",result\n",
+      "result = int (m/n)\n",
+      "print \"m/n=\",result\n",
+      "result = m*p\n",
+      "print \"m*p=\",result"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "m+n= 10\n",
+        "m/n= 0\n",
+        "m*p= 32\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "6.3.2,page number:141"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "m = 4\n",
+      "n = 6\n",
+      "p = 8\n",
+      "result= round(m+n-p*m+p/n,0)\n",
+      "print \"m=\",m,\",n=\",n,\",p=\",p\n",
+      "print \"m + n - p * m + p / n = \",result"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "m= 4 ,n= 6 ,p= 8\n",
+        "m + n - p * m + p / n =  -21.0\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "6.3.3,page number:142"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "m = 4\n",
+      "n = 6\n",
+      "print \" 6 mod 4 = \",n%m\n",
+      "print \"The modulus operator is : %\"\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        " 6 mod 4 =  2\n",
+        "The modulus operator is : %\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "6.3.4,page number:142"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "m = -4\n",
+      "n = 6\n",
+      "p = 8\n",
+      "print \"m=\",m,\" n=\",n,\" p=\",p\n",
+      "print \"gives\"\n",
+      "m=-m\n",
+      "n=-n\n",
+      "p=-p\n",
+      "print \"m=\",m,\" n=\",n,\" p=\",p"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "m= -4  n= 6  p= 8\n",
+        "gives\n",
+        "m= 4  n= -6  p= -8\n"
+       ]
+      }
+     ],
+     "prompt_number": 4
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter6_3.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter6_3.ipynb
new file mode 100755
index 00000000..4c020690
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter6_3.ipynb
@@ -0,0 +1,161 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:47d59a62b2c6bacca8aa43f556c3c49e598b6b0b52b3cecb75f5587ebd7d9f66"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "6:CONSTANTS,VARIABLES"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "6.3.1,page number:140"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "m=4\n",
+      "n=6\n",
+      "p=8\n",
+      "result = m+n\n",
+      "print \"m+n=\",result\n",
+      "result = int (m/n)\n",
+      "print \"m/n=\",result\n",
+      "result = m*p\n",
+      "print \"m*p=\",result"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "m+n= 10\n",
+        "m/n= 0\n",
+        "m*p= 32\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "6.3.2,page number:141"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "m = 4\n",
+      "n = 6\n",
+      "p = 8\n",
+      "result= round(m+n-p*m+p/n,0)\n",
+      "print \"m=\",m,\",n=\",n,\",p=\",p\n",
+      "print \"m + n - p * m + p / n = \",result"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "m= 4 ,n= 6 ,p= 8\n",
+        "m + n - p * m + p / n =  -21.0\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "6.3.3,page number:142"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "m = 4\n",
+      "n = 6\n",
+      "print \" 6 mod 4 = \",n%m\n",
+      "print \"The modulus operator is : %\"\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        " 6 mod 4 =  2\n",
+        "The modulus operator is : %\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "6.3.4,page number:142"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "m = -4\n",
+      "n = 6\n",
+      "p = 8\n",
+      "print \"m=\",m,\" n=\",n,\" p=\",p\n",
+      "print \"gives\"\n",
+      "m=-m\n",
+      "n=-n\n",
+      "p=-p\n",
+      "print \"m=\",m,\" n=\",n,\" p=\",p"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "m= -4  n= 6  p= 8\n",
+        "gives\n",
+        "m= 4  n= -6  p= -8\n"
+       ]
+      }
+     ],
+     "prompt_number": 4
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter6_4.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter6_4.ipynb
new file mode 100755
index 00000000..4c020690
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter6_4.ipynb
@@ -0,0 +1,161 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:47d59a62b2c6bacca8aa43f556c3c49e598b6b0b52b3cecb75f5587ebd7d9f66"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "6:CONSTANTS,VARIABLES"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "6.3.1,page number:140"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "m=4\n",
+      "n=6\n",
+      "p=8\n",
+      "result = m+n\n",
+      "print \"m+n=\",result\n",
+      "result = int (m/n)\n",
+      "print \"m/n=\",result\n",
+      "result = m*p\n",
+      "print \"m*p=\",result"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "m+n= 10\n",
+        "m/n= 0\n",
+        "m*p= 32\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "6.3.2,page number:141"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "m = 4\n",
+      "n = 6\n",
+      "p = 8\n",
+      "result= round(m+n-p*m+p/n,0)\n",
+      "print \"m=\",m,\",n=\",n,\",p=\",p\n",
+      "print \"m + n - p * m + p / n = \",result"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "m= 4 ,n= 6 ,p= 8\n",
+        "m + n - p * m + p / n =  -21.0\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "6.3.3,page number:142"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "m = 4\n",
+      "n = 6\n",
+      "print \" 6 mod 4 = \",n%m\n",
+      "print \"The modulus operator is : %\"\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        " 6 mod 4 =  2\n",
+        "The modulus operator is : %\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "6.3.4,page number:142"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "m = -4\n",
+      "n = 6\n",
+      "p = 8\n",
+      "print \"m=\",m,\" n=\",n,\" p=\",p\n",
+      "print \"gives\"\n",
+      "m=-m\n",
+      "n=-n\n",
+      "p=-p\n",
+      "print \"m=\",m,\" n=\",n,\" p=\",p"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "m= -4  n= 6  p= 8\n",
+        "gives\n",
+        "m= 4  n= -6  p= -8\n"
+       ]
+      }
+     ],
+     "prompt_number": 4
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter6_5.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter6_5.ipynb
new file mode 100755
index 00000000..4c020690
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter6_5.ipynb
@@ -0,0 +1,161 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:47d59a62b2c6bacca8aa43f556c3c49e598b6b0b52b3cecb75f5587ebd7d9f66"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "6:CONSTANTS,VARIABLES"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "6.3.1,page number:140"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "m=4\n",
+      "n=6\n",
+      "p=8\n",
+      "result = m+n\n",
+      "print \"m+n=\",result\n",
+      "result = int (m/n)\n",
+      "print \"m/n=\",result\n",
+      "result = m*p\n",
+      "print \"m*p=\",result"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "m+n= 10\n",
+        "m/n= 0\n",
+        "m*p= 32\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "6.3.2,page number:141"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "m = 4\n",
+      "n = 6\n",
+      "p = 8\n",
+      "result= round(m+n-p*m+p/n,0)\n",
+      "print \"m=\",m,\",n=\",n,\",p=\",p\n",
+      "print \"m + n - p * m + p / n = \",result"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "m= 4 ,n= 6 ,p= 8\n",
+        "m + n - p * m + p / n =  -21.0\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "6.3.3,page number:142"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "m = 4\n",
+      "n = 6\n",
+      "print \" 6 mod 4 = \",n%m\n",
+      "print \"The modulus operator is : %\"\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        " 6 mod 4 =  2\n",
+        "The modulus operator is : %\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "6.3.4,page number:142"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "m = -4\n",
+      "n = 6\n",
+      "p = 8\n",
+      "print \"m=\",m,\" n=\",n,\" p=\",p\n",
+      "print \"gives\"\n",
+      "m=-m\n",
+      "n=-n\n",
+      "p=-p\n",
+      "print \"m=\",m,\" n=\",n,\" p=\",p"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "m= -4  n= 6  p= 8\n",
+        "gives\n",
+        "m= 4  n= -6  p= -8\n"
+       ]
+      }
+     ],
+     "prompt_number": 4
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter6_6.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter6_6.ipynb
new file mode 100755
index 00000000..4c020690
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter6_6.ipynb
@@ -0,0 +1,161 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:47d59a62b2c6bacca8aa43f556c3c49e598b6b0b52b3cecb75f5587ebd7d9f66"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "6:CONSTANTS,VARIABLES"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "6.3.1,page number:140"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "m=4\n",
+      "n=6\n",
+      "p=8\n",
+      "result = m+n\n",
+      "print \"m+n=\",result\n",
+      "result = int (m/n)\n",
+      "print \"m/n=\",result\n",
+      "result = m*p\n",
+      "print \"m*p=\",result"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "m+n= 10\n",
+        "m/n= 0\n",
+        "m*p= 32\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "6.3.2,page number:141"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "m = 4\n",
+      "n = 6\n",
+      "p = 8\n",
+      "result= round(m+n-p*m+p/n,0)\n",
+      "print \"m=\",m,\",n=\",n,\",p=\",p\n",
+      "print \"m + n - p * m + p / n = \",result"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "m= 4 ,n= 6 ,p= 8\n",
+        "m + n - p * m + p / n =  -21.0\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "6.3.3,page number:142"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "m = 4\n",
+      "n = 6\n",
+      "print \" 6 mod 4 = \",n%m\n",
+      "print \"The modulus operator is : %\"\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        " 6 mod 4 =  2\n",
+        "The modulus operator is : %\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "6.3.4,page number:142"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "m = -4\n",
+      "n = 6\n",
+      "p = 8\n",
+      "print \"m=\",m,\" n=\",n,\" p=\",p\n",
+      "print \"gives\"\n",
+      "m=-m\n",
+      "n=-n\n",
+      "p=-p\n",
+      "print \"m=\",m,\" n=\",n,\" p=\",p"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "m= -4  n= 6  p= 8\n",
+        "gives\n",
+        "m= 4  n= -6  p= -8\n"
+       ]
+      }
+     ],
+     "prompt_number": 4
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter6_7.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter6_7.ipynb
new file mode 100755
index 00000000..4c020690
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter6_7.ipynb
@@ -0,0 +1,161 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:47d59a62b2c6bacca8aa43f556c3c49e598b6b0b52b3cecb75f5587ebd7d9f66"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "6:CONSTANTS,VARIABLES"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "6.3.1,page number:140"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "m=4\n",
+      "n=6\n",
+      "p=8\n",
+      "result = m+n\n",
+      "print \"m+n=\",result\n",
+      "result = int (m/n)\n",
+      "print \"m/n=\",result\n",
+      "result = m*p\n",
+      "print \"m*p=\",result"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "m+n= 10\n",
+        "m/n= 0\n",
+        "m*p= 32\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "6.3.2,page number:141"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "m = 4\n",
+      "n = 6\n",
+      "p = 8\n",
+      "result= round(m+n-p*m+p/n,0)\n",
+      "print \"m=\",m,\",n=\",n,\",p=\",p\n",
+      "print \"m + n - p * m + p / n = \",result"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "m= 4 ,n= 6 ,p= 8\n",
+        "m + n - p * m + p / n =  -21.0\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "6.3.3,page number:142"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "m = 4\n",
+      "n = 6\n",
+      "print \" 6 mod 4 = \",n%m\n",
+      "print \"The modulus operator is : %\"\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        " 6 mod 4 =  2\n",
+        "The modulus operator is : %\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "6.3.4,page number:142"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "m = -4\n",
+      "n = 6\n",
+      "p = 8\n",
+      "print \"m=\",m,\" n=\",n,\" p=\",p\n",
+      "print \"gives\"\n",
+      "m=-m\n",
+      "n=-n\n",
+      "p=-p\n",
+      "print \"m=\",m,\" n=\",n,\" p=\",p"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "m= -4  n= 6  p= 8\n",
+        "gives\n",
+        "m= 4  n= -6  p= -8\n"
+       ]
+      }
+     ],
+     "prompt_number": 4
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter6_8.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter6_8.ipynb
new file mode 100755
index 00000000..4c020690
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter6_8.ipynb
@@ -0,0 +1,161 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:47d59a62b2c6bacca8aa43f556c3c49e598b6b0b52b3cecb75f5587ebd7d9f66"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "6:CONSTANTS,VARIABLES"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "6.3.1,page number:140"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "m=4\n",
+      "n=6\n",
+      "p=8\n",
+      "result = m+n\n",
+      "print \"m+n=\",result\n",
+      "result = int (m/n)\n",
+      "print \"m/n=\",result\n",
+      "result = m*p\n",
+      "print \"m*p=\",result"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "m+n= 10\n",
+        "m/n= 0\n",
+        "m*p= 32\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "6.3.2,page number:141"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "m = 4\n",
+      "n = 6\n",
+      "p = 8\n",
+      "result= round(m+n-p*m+p/n,0)\n",
+      "print \"m=\",m,\",n=\",n,\",p=\",p\n",
+      "print \"m + n - p * m + p / n = \",result"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "m= 4 ,n= 6 ,p= 8\n",
+        "m + n - p * m + p / n =  -21.0\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "6.3.3,page number:142"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "m = 4\n",
+      "n = 6\n",
+      "print \" 6 mod 4 = \",n%m\n",
+      "print \"The modulus operator is : %\"\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        " 6 mod 4 =  2\n",
+        "The modulus operator is : %\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "6.3.4,page number:142"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "m = -4\n",
+      "n = 6\n",
+      "p = 8\n",
+      "print \"m=\",m,\" n=\",n,\" p=\",p\n",
+      "print \"gives\"\n",
+      "m=-m\n",
+      "n=-n\n",
+      "p=-p\n",
+      "print \"m=\",m,\" n=\",n,\" p=\",p"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "m= -4  n= 6  p= 8\n",
+        "gives\n",
+        "m= 4  n= -6  p= -8\n"
+       ]
+      }
+     ],
+     "prompt_number": 4
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter6_9.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter6_9.ipynb
new file mode 100755
index 00000000..4c020690
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter6_9.ipynb
@@ -0,0 +1,161 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:47d59a62b2c6bacca8aa43f556c3c49e598b6b0b52b3cecb75f5587ebd7d9f66"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "6:CONSTANTS,VARIABLES"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "6.3.1,page number:140"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "m=4\n",
+      "n=6\n",
+      "p=8\n",
+      "result = m+n\n",
+      "print \"m+n=\",result\n",
+      "result = int (m/n)\n",
+      "print \"m/n=\",result\n",
+      "result = m*p\n",
+      "print \"m*p=\",result"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "m+n= 10\n",
+        "m/n= 0\n",
+        "m*p= 32\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "6.3.2,page number:141"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "m = 4\n",
+      "n = 6\n",
+      "p = 8\n",
+      "result= round(m+n-p*m+p/n,0)\n",
+      "print \"m=\",m,\",n=\",n,\",p=\",p\n",
+      "print \"m + n - p * m + p / n = \",result"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "m= 4 ,n= 6 ,p= 8\n",
+        "m + n - p * m + p / n =  -21.0\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "6.3.3,page number:142"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "m = 4\n",
+      "n = 6\n",
+      "print \" 6 mod 4 = \",n%m\n",
+      "print \"The modulus operator is : %\"\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        " 6 mod 4 =  2\n",
+        "The modulus operator is : %\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "6.3.4,page number:142"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "m = -4\n",
+      "n = 6\n",
+      "p = 8\n",
+      "print \"m=\",m,\" n=\",n,\" p=\",p\n",
+      "print \"gives\"\n",
+      "m=-m\n",
+      "n=-n\n",
+      "p=-p\n",
+      "print \"m=\",m,\" n=\",n,\" p=\",p"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "m= -4  n= 6  p= 8\n",
+        "gives\n",
+        "m= 4  n= -6  p= -8\n"
+       ]
+      }
+     ],
+     "prompt_number": 4
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter7.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter7.ipynb
new file mode 100755
index 00000000..e3d4fa14
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter7.ipynb
@@ -0,0 +1,114 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:748883adf9987fa80917596c14388a91ad8fe34d417a5435c22239cebb03b99e"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "7.OPERATORS AND EXPRESSION"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "7.4.1,page number:145"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "number = 19+9\n",
+      "print \"The month of Februry has\",number,\"days\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The month of Februry has 28 days\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "7.4.2,page number:145"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "number=15\n",
+      "total=number*4\n",
+      "print total,\"is 4 times greater than\",number,\"number.\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "60 is 4 times greater than 15 number.\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "7.8.1,page number:150"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "m = 2\n",
+      "n = 12.34\n",
+      "result=m*n\n",
+      "print m,\"*\",n,\"=\",result\n",
+      "print result,\"in scientific notation is\",\"{:.2E}\".format(result)\n",
+      "print m,\"*\",n,\"=\",round(result)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "2 * 12.34 = 24.68\n",
+        "24.68 in scientific notation is 2.47E+01\n",
+        "2 * 12.34 = 25.0\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter7_1.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter7_1.ipynb
new file mode 100755
index 00000000..e3d4fa14
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter7_1.ipynb
@@ -0,0 +1,114 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:748883adf9987fa80917596c14388a91ad8fe34d417a5435c22239cebb03b99e"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "7.OPERATORS AND EXPRESSION"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "7.4.1,page number:145"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "number = 19+9\n",
+      "print \"The month of Februry has\",number,\"days\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The month of Februry has 28 days\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "7.4.2,page number:145"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "number=15\n",
+      "total=number*4\n",
+      "print total,\"is 4 times greater than\",number,\"number.\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "60 is 4 times greater than 15 number.\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "7.8.1,page number:150"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "m = 2\n",
+      "n = 12.34\n",
+      "result=m*n\n",
+      "print m,\"*\",n,\"=\",result\n",
+      "print result,\"in scientific notation is\",\"{:.2E}\".format(result)\n",
+      "print m,\"*\",n,\"=\",round(result)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "2 * 12.34 = 24.68\n",
+        "24.68 in scientific notation is 2.47E+01\n",
+        "2 * 12.34 = 25.0\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter7_10.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter7_10.ipynb
new file mode 100755
index 00000000..e3d4fa14
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter7_10.ipynb
@@ -0,0 +1,114 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:748883adf9987fa80917596c14388a91ad8fe34d417a5435c22239cebb03b99e"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "7.OPERATORS AND EXPRESSION"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "7.4.1,page number:145"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "number = 19+9\n",
+      "print \"The month of Februry has\",number,\"days\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The month of Februry has 28 days\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "7.4.2,page number:145"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "number=15\n",
+      "total=number*4\n",
+      "print total,\"is 4 times greater than\",number,\"number.\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "60 is 4 times greater than 15 number.\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "7.8.1,page number:150"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "m = 2\n",
+      "n = 12.34\n",
+      "result=m*n\n",
+      "print m,\"*\",n,\"=\",result\n",
+      "print result,\"in scientific notation is\",\"{:.2E}\".format(result)\n",
+      "print m,\"*\",n,\"=\",round(result)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "2 * 12.34 = 24.68\n",
+        "24.68 in scientific notation is 2.47E+01\n",
+        "2 * 12.34 = 25.0\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter7_11.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter7_11.ipynb
new file mode 100755
index 00000000..e3d4fa14
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter7_11.ipynb
@@ -0,0 +1,114 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:748883adf9987fa80917596c14388a91ad8fe34d417a5435c22239cebb03b99e"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "7.OPERATORS AND EXPRESSION"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "7.4.1,page number:145"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "number = 19+9\n",
+      "print \"The month of Februry has\",number,\"days\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The month of Februry has 28 days\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "7.4.2,page number:145"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "number=15\n",
+      "total=number*4\n",
+      "print total,\"is 4 times greater than\",number,\"number.\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "60 is 4 times greater than 15 number.\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "7.8.1,page number:150"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "m = 2\n",
+      "n = 12.34\n",
+      "result=m*n\n",
+      "print m,\"*\",n,\"=\",result\n",
+      "print result,\"in scientific notation is\",\"{:.2E}\".format(result)\n",
+      "print m,\"*\",n,\"=\",round(result)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "2 * 12.34 = 24.68\n",
+        "24.68 in scientific notation is 2.47E+01\n",
+        "2 * 12.34 = 25.0\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter7_12.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter7_12.ipynb
new file mode 100755
index 00000000..e3d4fa14
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter7_12.ipynb
@@ -0,0 +1,114 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:748883adf9987fa80917596c14388a91ad8fe34d417a5435c22239cebb03b99e"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "7.OPERATORS AND EXPRESSION"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "7.4.1,page number:145"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "number = 19+9\n",
+      "print \"The month of Februry has\",number,\"days\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The month of Februry has 28 days\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "7.4.2,page number:145"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "number=15\n",
+      "total=number*4\n",
+      "print total,\"is 4 times greater than\",number,\"number.\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "60 is 4 times greater than 15 number.\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "7.8.1,page number:150"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "m = 2\n",
+      "n = 12.34\n",
+      "result=m*n\n",
+      "print m,\"*\",n,\"=\",result\n",
+      "print result,\"in scientific notation is\",\"{:.2E}\".format(result)\n",
+      "print m,\"*\",n,\"=\",round(result)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "2 * 12.34 = 24.68\n",
+        "24.68 in scientific notation is 2.47E+01\n",
+        "2 * 12.34 = 25.0\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter7_13.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter7_13.ipynb
new file mode 100755
index 00000000..e3d4fa14
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter7_13.ipynb
@@ -0,0 +1,114 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:748883adf9987fa80917596c14388a91ad8fe34d417a5435c22239cebb03b99e"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "7.OPERATORS AND EXPRESSION"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "7.4.1,page number:145"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "number = 19+9\n",
+      "print \"The month of Februry has\",number,\"days\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The month of Februry has 28 days\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "7.4.2,page number:145"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "number=15\n",
+      "total=number*4\n",
+      "print total,\"is 4 times greater than\",number,\"number.\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "60 is 4 times greater than 15 number.\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "7.8.1,page number:150"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "m = 2\n",
+      "n = 12.34\n",
+      "result=m*n\n",
+      "print m,\"*\",n,\"=\",result\n",
+      "print result,\"in scientific notation is\",\"{:.2E}\".format(result)\n",
+      "print m,\"*\",n,\"=\",round(result)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "2 * 12.34 = 24.68\n",
+        "24.68 in scientific notation is 2.47E+01\n",
+        "2 * 12.34 = 25.0\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter7_14.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter7_14.ipynb
new file mode 100755
index 00000000..e3d4fa14
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter7_14.ipynb
@@ -0,0 +1,114 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:748883adf9987fa80917596c14388a91ad8fe34d417a5435c22239cebb03b99e"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "7.OPERATORS AND EXPRESSION"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "7.4.1,page number:145"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "number = 19+9\n",
+      "print \"The month of Februry has\",number,\"days\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The month of Februry has 28 days\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "7.4.2,page number:145"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "number=15\n",
+      "total=number*4\n",
+      "print total,\"is 4 times greater than\",number,\"number.\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "60 is 4 times greater than 15 number.\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "7.8.1,page number:150"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "m = 2\n",
+      "n = 12.34\n",
+      "result=m*n\n",
+      "print m,\"*\",n,\"=\",result\n",
+      "print result,\"in scientific notation is\",\"{:.2E}\".format(result)\n",
+      "print m,\"*\",n,\"=\",round(result)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "2 * 12.34 = 24.68\n",
+        "24.68 in scientific notation is 2.47E+01\n",
+        "2 * 12.34 = 25.0\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter7_15.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter7_15.ipynb
new file mode 100755
index 00000000..e3d4fa14
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter7_15.ipynb
@@ -0,0 +1,114 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:748883adf9987fa80917596c14388a91ad8fe34d417a5435c22239cebb03b99e"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "7.OPERATORS AND EXPRESSION"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "7.4.1,page number:145"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "number = 19+9\n",
+      "print \"The month of Februry has\",number,\"days\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The month of Februry has 28 days\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "7.4.2,page number:145"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "number=15\n",
+      "total=number*4\n",
+      "print total,\"is 4 times greater than\",number,\"number.\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "60 is 4 times greater than 15 number.\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "7.8.1,page number:150"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "m = 2\n",
+      "n = 12.34\n",
+      "result=m*n\n",
+      "print m,\"*\",n,\"=\",result\n",
+      "print result,\"in scientific notation is\",\"{:.2E}\".format(result)\n",
+      "print m,\"*\",n,\"=\",round(result)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "2 * 12.34 = 24.68\n",
+        "24.68 in scientific notation is 2.47E+01\n",
+        "2 * 12.34 = 25.0\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter7_2.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter7_2.ipynb
new file mode 100755
index 00000000..e3d4fa14
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter7_2.ipynb
@@ -0,0 +1,114 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:748883adf9987fa80917596c14388a91ad8fe34d417a5435c22239cebb03b99e"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "7.OPERATORS AND EXPRESSION"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "7.4.1,page number:145"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "number = 19+9\n",
+      "print \"The month of Februry has\",number,\"days\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The month of Februry has 28 days\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "7.4.2,page number:145"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "number=15\n",
+      "total=number*4\n",
+      "print total,\"is 4 times greater than\",number,\"number.\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "60 is 4 times greater than 15 number.\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "7.8.1,page number:150"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "m = 2\n",
+      "n = 12.34\n",
+      "result=m*n\n",
+      "print m,\"*\",n,\"=\",result\n",
+      "print result,\"in scientific notation is\",\"{:.2E}\".format(result)\n",
+      "print m,\"*\",n,\"=\",round(result)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "2 * 12.34 = 24.68\n",
+        "24.68 in scientific notation is 2.47E+01\n",
+        "2 * 12.34 = 25.0\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter7_3.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter7_3.ipynb
new file mode 100755
index 00000000..e3d4fa14
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter7_3.ipynb
@@ -0,0 +1,114 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:748883adf9987fa80917596c14388a91ad8fe34d417a5435c22239cebb03b99e"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "7.OPERATORS AND EXPRESSION"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "7.4.1,page number:145"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "number = 19+9\n",
+      "print \"The month of Februry has\",number,\"days\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The month of Februry has 28 days\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "7.4.2,page number:145"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "number=15\n",
+      "total=number*4\n",
+      "print total,\"is 4 times greater than\",number,\"number.\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "60 is 4 times greater than 15 number.\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "7.8.1,page number:150"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "m = 2\n",
+      "n = 12.34\n",
+      "result=m*n\n",
+      "print m,\"*\",n,\"=\",result\n",
+      "print result,\"in scientific notation is\",\"{:.2E}\".format(result)\n",
+      "print m,\"*\",n,\"=\",round(result)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "2 * 12.34 = 24.68\n",
+        "24.68 in scientific notation is 2.47E+01\n",
+        "2 * 12.34 = 25.0\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter7_4.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter7_4.ipynb
new file mode 100755
index 00000000..e3d4fa14
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter7_4.ipynb
@@ -0,0 +1,114 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:748883adf9987fa80917596c14388a91ad8fe34d417a5435c22239cebb03b99e"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "7.OPERATORS AND EXPRESSION"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "7.4.1,page number:145"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "number = 19+9\n",
+      "print \"The month of Februry has\",number,\"days\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The month of Februry has 28 days\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "7.4.2,page number:145"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "number=15\n",
+      "total=number*4\n",
+      "print total,\"is 4 times greater than\",number,\"number.\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "60 is 4 times greater than 15 number.\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "7.8.1,page number:150"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "m = 2\n",
+      "n = 12.34\n",
+      "result=m*n\n",
+      "print m,\"*\",n,\"=\",result\n",
+      "print result,\"in scientific notation is\",\"{:.2E}\".format(result)\n",
+      "print m,\"*\",n,\"=\",round(result)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "2 * 12.34 = 24.68\n",
+        "24.68 in scientific notation is 2.47E+01\n",
+        "2 * 12.34 = 25.0\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter7_5.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter7_5.ipynb
new file mode 100755
index 00000000..e3d4fa14
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter7_5.ipynb
@@ -0,0 +1,114 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:748883adf9987fa80917596c14388a91ad8fe34d417a5435c22239cebb03b99e"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "7.OPERATORS AND EXPRESSION"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "7.4.1,page number:145"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "number = 19+9\n",
+      "print \"The month of Februry has\",number,\"days\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The month of Februry has 28 days\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "7.4.2,page number:145"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "number=15\n",
+      "total=number*4\n",
+      "print total,\"is 4 times greater than\",number,\"number.\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "60 is 4 times greater than 15 number.\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "7.8.1,page number:150"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "m = 2\n",
+      "n = 12.34\n",
+      "result=m*n\n",
+      "print m,\"*\",n,\"=\",result\n",
+      "print result,\"in scientific notation is\",\"{:.2E}\".format(result)\n",
+      "print m,\"*\",n,\"=\",round(result)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "2 * 12.34 = 24.68\n",
+        "24.68 in scientific notation is 2.47E+01\n",
+        "2 * 12.34 = 25.0\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter7_6.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter7_6.ipynb
new file mode 100755
index 00000000..e3d4fa14
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter7_6.ipynb
@@ -0,0 +1,114 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:748883adf9987fa80917596c14388a91ad8fe34d417a5435c22239cebb03b99e"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "7.OPERATORS AND EXPRESSION"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "7.4.1,page number:145"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "number = 19+9\n",
+      "print \"The month of Februry has\",number,\"days\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The month of Februry has 28 days\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "7.4.2,page number:145"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "number=15\n",
+      "total=number*4\n",
+      "print total,\"is 4 times greater than\",number,\"number.\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "60 is 4 times greater than 15 number.\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "7.8.1,page number:150"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "m = 2\n",
+      "n = 12.34\n",
+      "result=m*n\n",
+      "print m,\"*\",n,\"=\",result\n",
+      "print result,\"in scientific notation is\",\"{:.2E}\".format(result)\n",
+      "print m,\"*\",n,\"=\",round(result)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "2 * 12.34 = 24.68\n",
+        "24.68 in scientific notation is 2.47E+01\n",
+        "2 * 12.34 = 25.0\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter7_7.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter7_7.ipynb
new file mode 100755
index 00000000..e3d4fa14
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter7_7.ipynb
@@ -0,0 +1,114 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:748883adf9987fa80917596c14388a91ad8fe34d417a5435c22239cebb03b99e"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "7.OPERATORS AND EXPRESSION"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "7.4.1,page number:145"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "number = 19+9\n",
+      "print \"The month of Februry has\",number,\"days\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The month of Februry has 28 days\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "7.4.2,page number:145"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "number=15\n",
+      "total=number*4\n",
+      "print total,\"is 4 times greater than\",number,\"number.\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "60 is 4 times greater than 15 number.\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "7.8.1,page number:150"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "m = 2\n",
+      "n = 12.34\n",
+      "result=m*n\n",
+      "print m,\"*\",n,\"=\",result\n",
+      "print result,\"in scientific notation is\",\"{:.2E}\".format(result)\n",
+      "print m,\"*\",n,\"=\",round(result)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "2 * 12.34 = 24.68\n",
+        "24.68 in scientific notation is 2.47E+01\n",
+        "2 * 12.34 = 25.0\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter7_8.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter7_8.ipynb
new file mode 100755
index 00000000..e3d4fa14
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter7_8.ipynb
@@ -0,0 +1,114 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:748883adf9987fa80917596c14388a91ad8fe34d417a5435c22239cebb03b99e"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "7.OPERATORS AND EXPRESSION"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "7.4.1,page number:145"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "number = 19+9\n",
+      "print \"The month of Februry has\",number,\"days\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The month of Februry has 28 days\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "7.4.2,page number:145"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "number=15\n",
+      "total=number*4\n",
+      "print total,\"is 4 times greater than\",number,\"number.\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "60 is 4 times greater than 15 number.\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "7.8.1,page number:150"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "m = 2\n",
+      "n = 12.34\n",
+      "result=m*n\n",
+      "print m,\"*\",n,\"=\",result\n",
+      "print result,\"in scientific notation is\",\"{:.2E}\".format(result)\n",
+      "print m,\"*\",n,\"=\",round(result)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "2 * 12.34 = 24.68\n",
+        "24.68 in scientific notation is 2.47E+01\n",
+        "2 * 12.34 = 25.0\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter7_9.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter7_9.ipynb
new file mode 100755
index 00000000..e3d4fa14
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter7_9.ipynb
@@ -0,0 +1,114 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:748883adf9987fa80917596c14388a91ad8fe34d417a5435c22239cebb03b99e"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "7.OPERATORS AND EXPRESSION"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "7.4.1,page number:145"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "number = 19+9\n",
+      "print \"The month of Februry has\",number,\"days\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The month of Februry has 28 days\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "7.4.2,page number:145"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "number=15\n",
+      "total=number*4\n",
+      "print total,\"is 4 times greater than\",number,\"number.\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "60 is 4 times greater than 15 number.\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "7.8.1,page number:150"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "m = 2\n",
+      "n = 12.34\n",
+      "result=m*n\n",
+      "print m,\"*\",n,\"=\",result\n",
+      "print result,\"in scientific notation is\",\"{:.2E}\".format(result)\n",
+      "print m,\"*\",n,\"=\",round(result)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "2 * 12.34 = 24.68\n",
+        "24.68 in scientific notation is 2.47E+01\n",
+        "2 * 12.34 = 25.0\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter8.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter8.ipynb
new file mode 100755
index 00000000..02731f67
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter8.ipynb
@@ -0,0 +1,139 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:9ca261b12dda6340bfb56a529d7d5db69661ff51a7fd92655edb700a9cae8e3b"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "8.MANAGING INPUT AND OUTPUT OPERATORS"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "8.1.1,page number:152"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"tce\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "tce\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "8.2.1,page number:153"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter Text :\"\n",
+      "str=raw_input()\n",
+      "print \"Text entered is:\\n\",str"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Text :\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "C programming Language is modern and advanced;it enables adressing bits and bytes.\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Text entered is:\n",
+        "C programming Language is modern and advanced;it enables adressing bits and bytes.\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "8.3.1,page number:155"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter an Integer :\"\n",
+      "number=int(input())\n",
+      "print \"The Square Of \",number,\"is\",number*number"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter an Integer :\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The Square Of  6 is 36\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter8_1.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter8_1.ipynb
new file mode 100755
index 00000000..02731f67
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter8_1.ipynb
@@ -0,0 +1,139 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:9ca261b12dda6340bfb56a529d7d5db69661ff51a7fd92655edb700a9cae8e3b"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "8.MANAGING INPUT AND OUTPUT OPERATORS"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "8.1.1,page number:152"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"tce\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "tce\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "8.2.1,page number:153"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter Text :\"\n",
+      "str=raw_input()\n",
+      "print \"Text entered is:\\n\",str"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Text :\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "C programming Language is modern and advanced;it enables adressing bits and bytes.\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Text entered is:\n",
+        "C programming Language is modern and advanced;it enables adressing bits and bytes.\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "8.3.1,page number:155"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter an Integer :\"\n",
+      "number=int(input())\n",
+      "print \"The Square Of \",number,\"is\",number*number"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter an Integer :\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The Square Of  6 is 36\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter8_10.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter8_10.ipynb
new file mode 100755
index 00000000..02731f67
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter8_10.ipynb
@@ -0,0 +1,139 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:9ca261b12dda6340bfb56a529d7d5db69661ff51a7fd92655edb700a9cae8e3b"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "8.MANAGING INPUT AND OUTPUT OPERATORS"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "8.1.1,page number:152"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"tce\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "tce\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "8.2.1,page number:153"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter Text :\"\n",
+      "str=raw_input()\n",
+      "print \"Text entered is:\\n\",str"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Text :\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "C programming Language is modern and advanced;it enables adressing bits and bytes.\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Text entered is:\n",
+        "C programming Language is modern and advanced;it enables adressing bits and bytes.\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "8.3.1,page number:155"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter an Integer :\"\n",
+      "number=int(input())\n",
+      "print \"The Square Of \",number,\"is\",number*number"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter an Integer :\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The Square Of  6 is 36\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter8_11.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter8_11.ipynb
new file mode 100755
index 00000000..02731f67
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter8_11.ipynb
@@ -0,0 +1,139 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:9ca261b12dda6340bfb56a529d7d5db69661ff51a7fd92655edb700a9cae8e3b"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "8.MANAGING INPUT AND OUTPUT OPERATORS"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "8.1.1,page number:152"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"tce\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "tce\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "8.2.1,page number:153"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter Text :\"\n",
+      "str=raw_input()\n",
+      "print \"Text entered is:\\n\",str"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Text :\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "C programming Language is modern and advanced;it enables adressing bits and bytes.\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Text entered is:\n",
+        "C programming Language is modern and advanced;it enables adressing bits and bytes.\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "8.3.1,page number:155"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter an Integer :\"\n",
+      "number=int(input())\n",
+      "print \"The Square Of \",number,\"is\",number*number"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter an Integer :\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The Square Of  6 is 36\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter8_12.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter8_12.ipynb
new file mode 100755
index 00000000..02731f67
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter8_12.ipynb
@@ -0,0 +1,139 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:9ca261b12dda6340bfb56a529d7d5db69661ff51a7fd92655edb700a9cae8e3b"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "8.MANAGING INPUT AND OUTPUT OPERATORS"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "8.1.1,page number:152"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"tce\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "tce\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "8.2.1,page number:153"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter Text :\"\n",
+      "str=raw_input()\n",
+      "print \"Text entered is:\\n\",str"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Text :\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "C programming Language is modern and advanced;it enables adressing bits and bytes.\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Text entered is:\n",
+        "C programming Language is modern and advanced;it enables adressing bits and bytes.\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "8.3.1,page number:155"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter an Integer :\"\n",
+      "number=int(input())\n",
+      "print \"The Square Of \",number,\"is\",number*number"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter an Integer :\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The Square Of  6 is 36\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter8_13.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter8_13.ipynb
new file mode 100755
index 00000000..02731f67
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter8_13.ipynb
@@ -0,0 +1,139 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:9ca261b12dda6340bfb56a529d7d5db69661ff51a7fd92655edb700a9cae8e3b"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "8.MANAGING INPUT AND OUTPUT OPERATORS"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "8.1.1,page number:152"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"tce\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "tce\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "8.2.1,page number:153"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter Text :\"\n",
+      "str=raw_input()\n",
+      "print \"Text entered is:\\n\",str"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Text :\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "C programming Language is modern and advanced;it enables adressing bits and bytes.\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Text entered is:\n",
+        "C programming Language is modern and advanced;it enables adressing bits and bytes.\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "8.3.1,page number:155"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter an Integer :\"\n",
+      "number=int(input())\n",
+      "print \"The Square Of \",number,\"is\",number*number"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter an Integer :\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The Square Of  6 is 36\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter8_14.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter8_14.ipynb
new file mode 100755
index 00000000..02731f67
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter8_14.ipynb
@@ -0,0 +1,139 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:9ca261b12dda6340bfb56a529d7d5db69661ff51a7fd92655edb700a9cae8e3b"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "8.MANAGING INPUT AND OUTPUT OPERATORS"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "8.1.1,page number:152"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"tce\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "tce\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "8.2.1,page number:153"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter Text :\"\n",
+      "str=raw_input()\n",
+      "print \"Text entered is:\\n\",str"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Text :\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "C programming Language is modern and advanced;it enables adressing bits and bytes.\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Text entered is:\n",
+        "C programming Language is modern and advanced;it enables adressing bits and bytes.\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "8.3.1,page number:155"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter an Integer :\"\n",
+      "number=int(input())\n",
+      "print \"The Square Of \",number,\"is\",number*number"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter an Integer :\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The Square Of  6 is 36\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter8_15.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter8_15.ipynb
new file mode 100755
index 00000000..02731f67
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter8_15.ipynb
@@ -0,0 +1,139 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:9ca261b12dda6340bfb56a529d7d5db69661ff51a7fd92655edb700a9cae8e3b"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "8.MANAGING INPUT AND OUTPUT OPERATORS"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "8.1.1,page number:152"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"tce\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "tce\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "8.2.1,page number:153"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter Text :\"\n",
+      "str=raw_input()\n",
+      "print \"Text entered is:\\n\",str"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Text :\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "C programming Language is modern and advanced;it enables adressing bits and bytes.\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Text entered is:\n",
+        "C programming Language is modern and advanced;it enables adressing bits and bytes.\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "8.3.1,page number:155"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter an Integer :\"\n",
+      "number=int(input())\n",
+      "print \"The Square Of \",number,\"is\",number*number"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter an Integer :\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The Square Of  6 is 36\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter8_2.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter8_2.ipynb
new file mode 100755
index 00000000..02731f67
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter8_2.ipynb
@@ -0,0 +1,139 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:9ca261b12dda6340bfb56a529d7d5db69661ff51a7fd92655edb700a9cae8e3b"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "8.MANAGING INPUT AND OUTPUT OPERATORS"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "8.1.1,page number:152"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"tce\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "tce\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "8.2.1,page number:153"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter Text :\"\n",
+      "str=raw_input()\n",
+      "print \"Text entered is:\\n\",str"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Text :\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "C programming Language is modern and advanced;it enables adressing bits and bytes.\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Text entered is:\n",
+        "C programming Language is modern and advanced;it enables adressing bits and bytes.\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "8.3.1,page number:155"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter an Integer :\"\n",
+      "number=int(input())\n",
+      "print \"The Square Of \",number,\"is\",number*number"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter an Integer :\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The Square Of  6 is 36\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter8_3.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter8_3.ipynb
new file mode 100755
index 00000000..02731f67
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter8_3.ipynb
@@ -0,0 +1,139 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:9ca261b12dda6340bfb56a529d7d5db69661ff51a7fd92655edb700a9cae8e3b"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "8.MANAGING INPUT AND OUTPUT OPERATORS"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "8.1.1,page number:152"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"tce\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "tce\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "8.2.1,page number:153"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter Text :\"\n",
+      "str=raw_input()\n",
+      "print \"Text entered is:\\n\",str"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Text :\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "C programming Language is modern and advanced;it enables adressing bits and bytes.\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Text entered is:\n",
+        "C programming Language is modern and advanced;it enables adressing bits and bytes.\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "8.3.1,page number:155"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter an Integer :\"\n",
+      "number=int(input())\n",
+      "print \"The Square Of \",number,\"is\",number*number"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter an Integer :\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The Square Of  6 is 36\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter8_4.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter8_4.ipynb
new file mode 100755
index 00000000..02731f67
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter8_4.ipynb
@@ -0,0 +1,139 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:9ca261b12dda6340bfb56a529d7d5db69661ff51a7fd92655edb700a9cae8e3b"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "8.MANAGING INPUT AND OUTPUT OPERATORS"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "8.1.1,page number:152"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"tce\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "tce\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "8.2.1,page number:153"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter Text :\"\n",
+      "str=raw_input()\n",
+      "print \"Text entered is:\\n\",str"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Text :\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "C programming Language is modern and advanced;it enables adressing bits and bytes.\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Text entered is:\n",
+        "C programming Language is modern and advanced;it enables adressing bits and bytes.\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "8.3.1,page number:155"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter an Integer :\"\n",
+      "number=int(input())\n",
+      "print \"The Square Of \",number,\"is\",number*number"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter an Integer :\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The Square Of  6 is 36\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter8_5.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter8_5.ipynb
new file mode 100755
index 00000000..02731f67
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter8_5.ipynb
@@ -0,0 +1,139 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:9ca261b12dda6340bfb56a529d7d5db69661ff51a7fd92655edb700a9cae8e3b"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "8.MANAGING INPUT AND OUTPUT OPERATORS"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "8.1.1,page number:152"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"tce\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "tce\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "8.2.1,page number:153"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter Text :\"\n",
+      "str=raw_input()\n",
+      "print \"Text entered is:\\n\",str"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Text :\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "C programming Language is modern and advanced;it enables adressing bits and bytes.\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Text entered is:\n",
+        "C programming Language is modern and advanced;it enables adressing bits and bytes.\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "8.3.1,page number:155"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter an Integer :\"\n",
+      "number=int(input())\n",
+      "print \"The Square Of \",number,\"is\",number*number"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter an Integer :\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The Square Of  6 is 36\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter8_6.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter8_6.ipynb
new file mode 100755
index 00000000..02731f67
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter8_6.ipynb
@@ -0,0 +1,139 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:9ca261b12dda6340bfb56a529d7d5db69661ff51a7fd92655edb700a9cae8e3b"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "8.MANAGING INPUT AND OUTPUT OPERATORS"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "8.1.1,page number:152"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"tce\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "tce\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "8.2.1,page number:153"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter Text :\"\n",
+      "str=raw_input()\n",
+      "print \"Text entered is:\\n\",str"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Text :\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "C programming Language is modern and advanced;it enables adressing bits and bytes.\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Text entered is:\n",
+        "C programming Language is modern and advanced;it enables adressing bits and bytes.\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "8.3.1,page number:155"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter an Integer :\"\n",
+      "number=int(input())\n",
+      "print \"The Square Of \",number,\"is\",number*number"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter an Integer :\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The Square Of  6 is 36\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter8_7.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter8_7.ipynb
new file mode 100755
index 00000000..02731f67
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter8_7.ipynb
@@ -0,0 +1,139 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:9ca261b12dda6340bfb56a529d7d5db69661ff51a7fd92655edb700a9cae8e3b"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "8.MANAGING INPUT AND OUTPUT OPERATORS"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "8.1.1,page number:152"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"tce\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "tce\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "8.2.1,page number:153"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter Text :\"\n",
+      "str=raw_input()\n",
+      "print \"Text entered is:\\n\",str"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Text :\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "C programming Language is modern and advanced;it enables adressing bits and bytes.\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Text entered is:\n",
+        "C programming Language is modern and advanced;it enables adressing bits and bytes.\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "8.3.1,page number:155"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter an Integer :\"\n",
+      "number=int(input())\n",
+      "print \"The Square Of \",number,\"is\",number*number"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter an Integer :\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The Square Of  6 is 36\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter8_8.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter8_8.ipynb
new file mode 100755
index 00000000..02731f67
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter8_8.ipynb
@@ -0,0 +1,139 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:9ca261b12dda6340bfb56a529d7d5db69661ff51a7fd92655edb700a9cae8e3b"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "8.MANAGING INPUT AND OUTPUT OPERATORS"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "8.1.1,page number:152"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"tce\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "tce\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "8.2.1,page number:153"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter Text :\"\n",
+      "str=raw_input()\n",
+      "print \"Text entered is:\\n\",str"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Text :\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "C programming Language is modern and advanced;it enables adressing bits and bytes.\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Text entered is:\n",
+        "C programming Language is modern and advanced;it enables adressing bits and bytes.\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "8.3.1,page number:155"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter an Integer :\"\n",
+      "number=int(input())\n",
+      "print \"The Square Of \",number,\"is\",number*number"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter an Integer :\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The Square Of  6 is 36\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter8_9.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter8_9.ipynb
new file mode 100755
index 00000000..02731f67
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter8_9.ipynb
@@ -0,0 +1,139 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:9ca261b12dda6340bfb56a529d7d5db69661ff51a7fd92655edb700a9cae8e3b"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "8.MANAGING INPUT AND OUTPUT OPERATORS"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "8.1.1,page number:152"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"tce\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "tce\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "8.2.1,page number:153"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter Text :\"\n",
+      "str=raw_input()\n",
+      "print \"Text entered is:\\n\",str"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Text :\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "C programming Language is modern and advanced;it enables adressing bits and bytes.\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Text entered is:\n",
+        "C programming Language is modern and advanced;it enables adressing bits and bytes.\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "8.3.1,page number:155"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter an Integer :\"\n",
+      "number=int(input())\n",
+      "print \"The Square Of \",number,\"is\",number*number"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter an Integer :\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The Square Of  6 is 36\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9.ipynb
new file mode 100755
index 00000000..c59dc853
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9.ipynb
@@ -0,0 +1,832 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:cf6bdce268b89df5f08741df390466a4ba8e95dbdba72ee30279eb61d19897af"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "9 : DECISION MAKING,BREAKING BRANCHING AND LOOPING"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.1.1,page number:156"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Type an Integer\"\n",
+      "numb=int(input())\n",
+      "if numb<=5:\n",
+      "    print \"Good Choice!\"\n",
+      "print \"Thank You!\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Type an Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "3\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Good Choice!\n",
+        "Thank You!\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.2.1,page number:157"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter year : \"\n",
+      "year= int(input())\n",
+      "if year%4 == 0 and year%100 != 0 or year%400 == 0:\n",
+      "    print year,\"is a leap year\"\n",
+      "else:\n",
+      "    print year,\"is not a leap year\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter year : \n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1990\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1990 is not a leap year\n"
+       ]
+      }
+     ],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.3.1,page number:157"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter Year :\"\n",
+      "year=int(input())\n",
+      "if year%4 == 0 :\n",
+      "    if year % 100 != 0:\n",
+      "        print year,\"is leap year\"\n",
+      "    else:\n",
+      "        if year%400 == 0:\n",
+      "            print year,\" is leap year\"\n",
+      "else:\n",
+      "    print year,\"is not a leap year\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Year :\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1990\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1990 is not a leap year\n"
+       ]
+      }
+     ],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.3.2,page number:158"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter the number\"\n",
+      "numb =int(input())\n",
+      "if numb<=100:\n",
+      "    if numb>=30:\n",
+      "        print numb,\"lies between 30-100\"\n",
+      "    else:\n",
+      "        print numb,\"is outside 30-100\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the number\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "40\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "40 lies between 30-100\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.4.1,page number : 158"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter choice of city(1-4)\"\n",
+      "city = int(input())\n",
+      "if city == 1:\n",
+      "    print \"Madurai\"\n",
+      "elif city == 2:\n",
+      "    print \"Chennai\"\n",
+      "elif city == 3:\n",
+      "    print \"Mumbai\"\n",
+      "elif city == 4:\n",
+      "    print \"Calcutta\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter choice of city(1-4)\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "3\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Mumbai\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.5.1,page number:159"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "numb=int(input(\"Enter the number\"))\n",
+      "if numb == 0:\n",
+      "    print \"prints case0\"\n",
+      "elif numb == 1:\n",
+      "    print \"prints case1\"\n",
+      "elif numb == 2:\n",
+      "    print \"prints case2\" \n",
+      "else:\n",
+      "    print"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the number2\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "prints case2\n"
+       ]
+      }
+     ],
+     "prompt_number": 10
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.6.1,page number : 161"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "i =20\n",
+      "variable =array.array('i',[])\n",
+      "size = 0\n",
+      "\n",
+      "def get_array_size():\n",
+      "    print \"Array-size :\"\n",
+      "    global size\n",
+      "    size=int(input())\n",
+      "    if size<1 or size>i :\n",
+      "        get_array_size()\n",
+      "    \n",
+      "def input_fetch():\n",
+      "    global size\n",
+      "    global variabless\n",
+      "    for k in range(0,size):\n",
+      "        m=int(input())\n",
+      "        variable.append(m)\n",
+      "    return\n",
+      "\n",
+      "def sort_list():\n",
+      "    global variable\n",
+      "    variable= array.array('i',sorted(variable))\n",
+      "    \n",
+      "    return\n",
+      "    \n",
+      "def output():\n",
+      "    for k in range(0,size):\n",
+      "        print variable[k],\n",
+      "    return\n",
+      "\n",
+      "def even(number):\n",
+      "    if number/2 == 0:\n",
+      "        return 1\n",
+      "    else:\n",
+      "        return 0\n",
+      "\n",
+      "get_array_size()\n",
+      "input_fetch()\n",
+      "sort_list()\n",
+      "print \"The sorted list is :\"\n",
+      "output()\n",
+      "print \"\\nMedian : \",\n",
+      "\n",
+      "median=round((variable[(size/2)-1]+variable[size/2])/2,3) if even(size)  else float(variable[size/2])\n",
+      "print median"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Array-size :\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "10\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "7\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "8\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "-4\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "0\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "5\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "13\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "17\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "25\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The sorted list is :\n",
+        "-4 0 5 6 6 7 8 13 17 25 \n",
+        "Median :  7.0\n"
+       ]
+      }
+     ],
+     "prompt_number": 7
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.8.1,page number:163"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "index = 1\n",
+      "while index<12:\n",
+      "    print \"This is line \",index\n",
+      "    index+=1\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "This is line  1\n",
+        "This is line  2\n",
+        "This is line  3\n",
+        "This is line  4\n",
+        "This is line  5\n",
+        "This is line  6\n",
+        "This is line  7\n",
+        "This is line  8\n",
+        "This is line  9\n",
+        "This is line  10\n",
+        "This is line  11\n"
+       ]
+      }
+     ],
+     "prompt_number": 8
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.9.1,page number:164"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter Integer\"\n",
+      "total_sum=0\n",
+      "numb=int(input())\n",
+      "while numb>0:\n",
+      "    digit=numb %10\n",
+      "    total_sum+=digit\n",
+      "    numb/=10\n",
+      "print \"Sum is \",total_sum"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1776\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Sum is  21\n"
+       ]
+      }
+     ],
+     "prompt_number": 9
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.9.2,page number:165"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter Integer:\"\n",
+      "numb=int(input())\n",
+      "print numb,\"is reversed as \",\n",
+      "while numb>0:\n",
+      "    digit=numb%10\n",
+      "    print digit,\n",
+      "    numb/=10\n",
+      "print \"\\n\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer:\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1234\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1234 is reversed as  4 3 2 1 \n",
+        "\n"
+       ]
+      }
+     ],
+     "prompt_number": 10
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.10.1,page number:166"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "for index in range(1,11):\n",
+      "    print \" line \",index"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        " line  1\n",
+        " line  2\n",
+        " line  3\n",
+        " line  4\n",
+        " line  5\n",
+        " line  6\n",
+        " line  7\n",
+        " line  8\n",
+        " line  9\n",
+        " line  10\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.10.2,page number:166"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Result\"\n",
+      "print \"Index     Index Squared\"\n",
+      "print \"_____     _____________\"\n",
+      "for  index in range(1,11):\n",
+      "    print index,\"         \",index*index"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Result\n",
+        "Index     Index Squared\n",
+        "_____     _____________\n",
+        "1           1\n",
+        "2           4\n",
+        "3           9\n",
+        "4           16\n",
+        "5           25\n",
+        "6           36\n",
+        "7           49\n",
+        "8           64\n",
+        "9           81\n",
+        "10           100\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.10.3,page number:167"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "total_sum=0\n",
+      "value=100\n",
+      "for index in range(1,value+1):\n",
+      "    total_sum+=index\n",
+      "print \"Sum of 1 to \",value,\" = \",total_sum"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Sum of 1 to  100  =  5050\n"
+       ]
+      }
+     ],
+     "prompt_number": 4
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.11.1,page number:167"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def exceptive():\n",
+      "    for index in range(1,90):\n",
+      "        if index%5 == 0:\n",
+      "            continue\n",
+      "        print index\n",
+      "exceptive()"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1\n",
+        "2\n",
+        "3\n",
+        "4\n",
+        "6\n",
+        "7\n",
+        "8\n",
+        "9\n",
+        "11\n",
+        "12\n",
+        "13\n",
+        "14\n",
+        "16\n",
+        "17\n",
+        "18\n",
+        "19\n",
+        "21\n",
+        "22\n",
+        "23\n",
+        "24\n",
+        "26\n",
+        "27\n",
+        "28\n",
+        "29\n",
+        "31\n",
+        "32\n",
+        "33\n",
+        "34\n",
+        "36\n",
+        "37\n",
+        "38\n",
+        "39\n",
+        "41\n",
+        "42\n",
+        "43\n",
+        "44\n",
+        "46\n",
+        "47\n",
+        "48\n",
+        "49\n",
+        "51\n",
+        "52\n",
+        "53\n",
+        "54\n",
+        "56\n",
+        "57\n",
+        "58\n",
+        "59\n",
+        "61\n",
+        "62\n",
+        "63\n",
+        "64\n",
+        "66\n",
+        "67\n",
+        "68\n",
+        "69\n",
+        "71\n",
+        "72\n",
+        "73\n",
+        "74\n",
+        "76\n",
+        "77\n",
+        "78\n",
+        "79\n",
+        "81\n",
+        "82\n",
+        "83\n",
+        "84\n",
+        "86\n",
+        "87\n",
+        "88\n",
+        "89\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_1.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_1.ipynb
new file mode 100755
index 00000000..c59dc853
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_1.ipynb
@@ -0,0 +1,832 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:cf6bdce268b89df5f08741df390466a4ba8e95dbdba72ee30279eb61d19897af"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "9 : DECISION MAKING,BREAKING BRANCHING AND LOOPING"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.1.1,page number:156"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Type an Integer\"\n",
+      "numb=int(input())\n",
+      "if numb<=5:\n",
+      "    print \"Good Choice!\"\n",
+      "print \"Thank You!\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Type an Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "3\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Good Choice!\n",
+        "Thank You!\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.2.1,page number:157"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter year : \"\n",
+      "year= int(input())\n",
+      "if year%4 == 0 and year%100 != 0 or year%400 == 0:\n",
+      "    print year,\"is a leap year\"\n",
+      "else:\n",
+      "    print year,\"is not a leap year\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter year : \n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1990\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1990 is not a leap year\n"
+       ]
+      }
+     ],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.3.1,page number:157"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter Year :\"\n",
+      "year=int(input())\n",
+      "if year%4 == 0 :\n",
+      "    if year % 100 != 0:\n",
+      "        print year,\"is leap year\"\n",
+      "    else:\n",
+      "        if year%400 == 0:\n",
+      "            print year,\" is leap year\"\n",
+      "else:\n",
+      "    print year,\"is not a leap year\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Year :\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1990\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1990 is not a leap year\n"
+       ]
+      }
+     ],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.3.2,page number:158"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter the number\"\n",
+      "numb =int(input())\n",
+      "if numb<=100:\n",
+      "    if numb>=30:\n",
+      "        print numb,\"lies between 30-100\"\n",
+      "    else:\n",
+      "        print numb,\"is outside 30-100\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the number\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "40\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "40 lies between 30-100\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.4.1,page number : 158"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter choice of city(1-4)\"\n",
+      "city = int(input())\n",
+      "if city == 1:\n",
+      "    print \"Madurai\"\n",
+      "elif city == 2:\n",
+      "    print \"Chennai\"\n",
+      "elif city == 3:\n",
+      "    print \"Mumbai\"\n",
+      "elif city == 4:\n",
+      "    print \"Calcutta\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter choice of city(1-4)\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "3\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Mumbai\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.5.1,page number:159"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "numb=int(input(\"Enter the number\"))\n",
+      "if numb == 0:\n",
+      "    print \"prints case0\"\n",
+      "elif numb == 1:\n",
+      "    print \"prints case1\"\n",
+      "elif numb == 2:\n",
+      "    print \"prints case2\" \n",
+      "else:\n",
+      "    print"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the number2\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "prints case2\n"
+       ]
+      }
+     ],
+     "prompt_number": 10
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.6.1,page number : 161"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "i =20\n",
+      "variable =array.array('i',[])\n",
+      "size = 0\n",
+      "\n",
+      "def get_array_size():\n",
+      "    print \"Array-size :\"\n",
+      "    global size\n",
+      "    size=int(input())\n",
+      "    if size<1 or size>i :\n",
+      "        get_array_size()\n",
+      "    \n",
+      "def input_fetch():\n",
+      "    global size\n",
+      "    global variabless\n",
+      "    for k in range(0,size):\n",
+      "        m=int(input())\n",
+      "        variable.append(m)\n",
+      "    return\n",
+      "\n",
+      "def sort_list():\n",
+      "    global variable\n",
+      "    variable= array.array('i',sorted(variable))\n",
+      "    \n",
+      "    return\n",
+      "    \n",
+      "def output():\n",
+      "    for k in range(0,size):\n",
+      "        print variable[k],\n",
+      "    return\n",
+      "\n",
+      "def even(number):\n",
+      "    if number/2 == 0:\n",
+      "        return 1\n",
+      "    else:\n",
+      "        return 0\n",
+      "\n",
+      "get_array_size()\n",
+      "input_fetch()\n",
+      "sort_list()\n",
+      "print \"The sorted list is :\"\n",
+      "output()\n",
+      "print \"\\nMedian : \",\n",
+      "\n",
+      "median=round((variable[(size/2)-1]+variable[size/2])/2,3) if even(size)  else float(variable[size/2])\n",
+      "print median"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Array-size :\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "10\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "7\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "8\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "-4\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "0\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "5\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "13\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "17\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "25\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The sorted list is :\n",
+        "-4 0 5 6 6 7 8 13 17 25 \n",
+        "Median :  7.0\n"
+       ]
+      }
+     ],
+     "prompt_number": 7
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.8.1,page number:163"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "index = 1\n",
+      "while index<12:\n",
+      "    print \"This is line \",index\n",
+      "    index+=1\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "This is line  1\n",
+        "This is line  2\n",
+        "This is line  3\n",
+        "This is line  4\n",
+        "This is line  5\n",
+        "This is line  6\n",
+        "This is line  7\n",
+        "This is line  8\n",
+        "This is line  9\n",
+        "This is line  10\n",
+        "This is line  11\n"
+       ]
+      }
+     ],
+     "prompt_number": 8
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.9.1,page number:164"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter Integer\"\n",
+      "total_sum=0\n",
+      "numb=int(input())\n",
+      "while numb>0:\n",
+      "    digit=numb %10\n",
+      "    total_sum+=digit\n",
+      "    numb/=10\n",
+      "print \"Sum is \",total_sum"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1776\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Sum is  21\n"
+       ]
+      }
+     ],
+     "prompt_number": 9
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.9.2,page number:165"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter Integer:\"\n",
+      "numb=int(input())\n",
+      "print numb,\"is reversed as \",\n",
+      "while numb>0:\n",
+      "    digit=numb%10\n",
+      "    print digit,\n",
+      "    numb/=10\n",
+      "print \"\\n\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer:\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1234\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1234 is reversed as  4 3 2 1 \n",
+        "\n"
+       ]
+      }
+     ],
+     "prompt_number": 10
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.10.1,page number:166"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "for index in range(1,11):\n",
+      "    print \" line \",index"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        " line  1\n",
+        " line  2\n",
+        " line  3\n",
+        " line  4\n",
+        " line  5\n",
+        " line  6\n",
+        " line  7\n",
+        " line  8\n",
+        " line  9\n",
+        " line  10\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.10.2,page number:166"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Result\"\n",
+      "print \"Index     Index Squared\"\n",
+      "print \"_____     _____________\"\n",
+      "for  index in range(1,11):\n",
+      "    print index,\"         \",index*index"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Result\n",
+        "Index     Index Squared\n",
+        "_____     _____________\n",
+        "1           1\n",
+        "2           4\n",
+        "3           9\n",
+        "4           16\n",
+        "5           25\n",
+        "6           36\n",
+        "7           49\n",
+        "8           64\n",
+        "9           81\n",
+        "10           100\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.10.3,page number:167"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "total_sum=0\n",
+      "value=100\n",
+      "for index in range(1,value+1):\n",
+      "    total_sum+=index\n",
+      "print \"Sum of 1 to \",value,\" = \",total_sum"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Sum of 1 to  100  =  5050\n"
+       ]
+      }
+     ],
+     "prompt_number": 4
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.11.1,page number:167"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def exceptive():\n",
+      "    for index in range(1,90):\n",
+      "        if index%5 == 0:\n",
+      "            continue\n",
+      "        print index\n",
+      "exceptive()"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1\n",
+        "2\n",
+        "3\n",
+        "4\n",
+        "6\n",
+        "7\n",
+        "8\n",
+        "9\n",
+        "11\n",
+        "12\n",
+        "13\n",
+        "14\n",
+        "16\n",
+        "17\n",
+        "18\n",
+        "19\n",
+        "21\n",
+        "22\n",
+        "23\n",
+        "24\n",
+        "26\n",
+        "27\n",
+        "28\n",
+        "29\n",
+        "31\n",
+        "32\n",
+        "33\n",
+        "34\n",
+        "36\n",
+        "37\n",
+        "38\n",
+        "39\n",
+        "41\n",
+        "42\n",
+        "43\n",
+        "44\n",
+        "46\n",
+        "47\n",
+        "48\n",
+        "49\n",
+        "51\n",
+        "52\n",
+        "53\n",
+        "54\n",
+        "56\n",
+        "57\n",
+        "58\n",
+        "59\n",
+        "61\n",
+        "62\n",
+        "63\n",
+        "64\n",
+        "66\n",
+        "67\n",
+        "68\n",
+        "69\n",
+        "71\n",
+        "72\n",
+        "73\n",
+        "74\n",
+        "76\n",
+        "77\n",
+        "78\n",
+        "79\n",
+        "81\n",
+        "82\n",
+        "83\n",
+        "84\n",
+        "86\n",
+        "87\n",
+        "88\n",
+        "89\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_10.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_10.ipynb
new file mode 100755
index 00000000..c59dc853
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_10.ipynb
@@ -0,0 +1,832 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:cf6bdce268b89df5f08741df390466a4ba8e95dbdba72ee30279eb61d19897af"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "9 : DECISION MAKING,BREAKING BRANCHING AND LOOPING"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.1.1,page number:156"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Type an Integer\"\n",
+      "numb=int(input())\n",
+      "if numb<=5:\n",
+      "    print \"Good Choice!\"\n",
+      "print \"Thank You!\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Type an Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "3\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Good Choice!\n",
+        "Thank You!\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.2.1,page number:157"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter year : \"\n",
+      "year= int(input())\n",
+      "if year%4 == 0 and year%100 != 0 or year%400 == 0:\n",
+      "    print year,\"is a leap year\"\n",
+      "else:\n",
+      "    print year,\"is not a leap year\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter year : \n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1990\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1990 is not a leap year\n"
+       ]
+      }
+     ],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.3.1,page number:157"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter Year :\"\n",
+      "year=int(input())\n",
+      "if year%4 == 0 :\n",
+      "    if year % 100 != 0:\n",
+      "        print year,\"is leap year\"\n",
+      "    else:\n",
+      "        if year%400 == 0:\n",
+      "            print year,\" is leap year\"\n",
+      "else:\n",
+      "    print year,\"is not a leap year\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Year :\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1990\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1990 is not a leap year\n"
+       ]
+      }
+     ],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.3.2,page number:158"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter the number\"\n",
+      "numb =int(input())\n",
+      "if numb<=100:\n",
+      "    if numb>=30:\n",
+      "        print numb,\"lies between 30-100\"\n",
+      "    else:\n",
+      "        print numb,\"is outside 30-100\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the number\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "40\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "40 lies between 30-100\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.4.1,page number : 158"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter choice of city(1-4)\"\n",
+      "city = int(input())\n",
+      "if city == 1:\n",
+      "    print \"Madurai\"\n",
+      "elif city == 2:\n",
+      "    print \"Chennai\"\n",
+      "elif city == 3:\n",
+      "    print \"Mumbai\"\n",
+      "elif city == 4:\n",
+      "    print \"Calcutta\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter choice of city(1-4)\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "3\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Mumbai\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.5.1,page number:159"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "numb=int(input(\"Enter the number\"))\n",
+      "if numb == 0:\n",
+      "    print \"prints case0\"\n",
+      "elif numb == 1:\n",
+      "    print \"prints case1\"\n",
+      "elif numb == 2:\n",
+      "    print \"prints case2\" \n",
+      "else:\n",
+      "    print"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the number2\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "prints case2\n"
+       ]
+      }
+     ],
+     "prompt_number": 10
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.6.1,page number : 161"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "i =20\n",
+      "variable =array.array('i',[])\n",
+      "size = 0\n",
+      "\n",
+      "def get_array_size():\n",
+      "    print \"Array-size :\"\n",
+      "    global size\n",
+      "    size=int(input())\n",
+      "    if size<1 or size>i :\n",
+      "        get_array_size()\n",
+      "    \n",
+      "def input_fetch():\n",
+      "    global size\n",
+      "    global variabless\n",
+      "    for k in range(0,size):\n",
+      "        m=int(input())\n",
+      "        variable.append(m)\n",
+      "    return\n",
+      "\n",
+      "def sort_list():\n",
+      "    global variable\n",
+      "    variable= array.array('i',sorted(variable))\n",
+      "    \n",
+      "    return\n",
+      "    \n",
+      "def output():\n",
+      "    for k in range(0,size):\n",
+      "        print variable[k],\n",
+      "    return\n",
+      "\n",
+      "def even(number):\n",
+      "    if number/2 == 0:\n",
+      "        return 1\n",
+      "    else:\n",
+      "        return 0\n",
+      "\n",
+      "get_array_size()\n",
+      "input_fetch()\n",
+      "sort_list()\n",
+      "print \"The sorted list is :\"\n",
+      "output()\n",
+      "print \"\\nMedian : \",\n",
+      "\n",
+      "median=round((variable[(size/2)-1]+variable[size/2])/2,3) if even(size)  else float(variable[size/2])\n",
+      "print median"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Array-size :\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "10\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "7\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "8\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "-4\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "0\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "5\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "13\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "17\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "25\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The sorted list is :\n",
+        "-4 0 5 6 6 7 8 13 17 25 \n",
+        "Median :  7.0\n"
+       ]
+      }
+     ],
+     "prompt_number": 7
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.8.1,page number:163"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "index = 1\n",
+      "while index<12:\n",
+      "    print \"This is line \",index\n",
+      "    index+=1\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "This is line  1\n",
+        "This is line  2\n",
+        "This is line  3\n",
+        "This is line  4\n",
+        "This is line  5\n",
+        "This is line  6\n",
+        "This is line  7\n",
+        "This is line  8\n",
+        "This is line  9\n",
+        "This is line  10\n",
+        "This is line  11\n"
+       ]
+      }
+     ],
+     "prompt_number": 8
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.9.1,page number:164"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter Integer\"\n",
+      "total_sum=0\n",
+      "numb=int(input())\n",
+      "while numb>0:\n",
+      "    digit=numb %10\n",
+      "    total_sum+=digit\n",
+      "    numb/=10\n",
+      "print \"Sum is \",total_sum"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1776\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Sum is  21\n"
+       ]
+      }
+     ],
+     "prompt_number": 9
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.9.2,page number:165"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter Integer:\"\n",
+      "numb=int(input())\n",
+      "print numb,\"is reversed as \",\n",
+      "while numb>0:\n",
+      "    digit=numb%10\n",
+      "    print digit,\n",
+      "    numb/=10\n",
+      "print \"\\n\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer:\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1234\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1234 is reversed as  4 3 2 1 \n",
+        "\n"
+       ]
+      }
+     ],
+     "prompt_number": 10
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.10.1,page number:166"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "for index in range(1,11):\n",
+      "    print \" line \",index"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        " line  1\n",
+        " line  2\n",
+        " line  3\n",
+        " line  4\n",
+        " line  5\n",
+        " line  6\n",
+        " line  7\n",
+        " line  8\n",
+        " line  9\n",
+        " line  10\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.10.2,page number:166"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Result\"\n",
+      "print \"Index     Index Squared\"\n",
+      "print \"_____     _____________\"\n",
+      "for  index in range(1,11):\n",
+      "    print index,\"         \",index*index"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Result\n",
+        "Index     Index Squared\n",
+        "_____     _____________\n",
+        "1           1\n",
+        "2           4\n",
+        "3           9\n",
+        "4           16\n",
+        "5           25\n",
+        "6           36\n",
+        "7           49\n",
+        "8           64\n",
+        "9           81\n",
+        "10           100\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.10.3,page number:167"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "total_sum=0\n",
+      "value=100\n",
+      "for index in range(1,value+1):\n",
+      "    total_sum+=index\n",
+      "print \"Sum of 1 to \",value,\" = \",total_sum"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Sum of 1 to  100  =  5050\n"
+       ]
+      }
+     ],
+     "prompt_number": 4
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.11.1,page number:167"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def exceptive():\n",
+      "    for index in range(1,90):\n",
+      "        if index%5 == 0:\n",
+      "            continue\n",
+      "        print index\n",
+      "exceptive()"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1\n",
+        "2\n",
+        "3\n",
+        "4\n",
+        "6\n",
+        "7\n",
+        "8\n",
+        "9\n",
+        "11\n",
+        "12\n",
+        "13\n",
+        "14\n",
+        "16\n",
+        "17\n",
+        "18\n",
+        "19\n",
+        "21\n",
+        "22\n",
+        "23\n",
+        "24\n",
+        "26\n",
+        "27\n",
+        "28\n",
+        "29\n",
+        "31\n",
+        "32\n",
+        "33\n",
+        "34\n",
+        "36\n",
+        "37\n",
+        "38\n",
+        "39\n",
+        "41\n",
+        "42\n",
+        "43\n",
+        "44\n",
+        "46\n",
+        "47\n",
+        "48\n",
+        "49\n",
+        "51\n",
+        "52\n",
+        "53\n",
+        "54\n",
+        "56\n",
+        "57\n",
+        "58\n",
+        "59\n",
+        "61\n",
+        "62\n",
+        "63\n",
+        "64\n",
+        "66\n",
+        "67\n",
+        "68\n",
+        "69\n",
+        "71\n",
+        "72\n",
+        "73\n",
+        "74\n",
+        "76\n",
+        "77\n",
+        "78\n",
+        "79\n",
+        "81\n",
+        "82\n",
+        "83\n",
+        "84\n",
+        "86\n",
+        "87\n",
+        "88\n",
+        "89\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_11.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_11.ipynb
new file mode 100755
index 00000000..c59dc853
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_11.ipynb
@@ -0,0 +1,832 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:cf6bdce268b89df5f08741df390466a4ba8e95dbdba72ee30279eb61d19897af"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "9 : DECISION MAKING,BREAKING BRANCHING AND LOOPING"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.1.1,page number:156"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Type an Integer\"\n",
+      "numb=int(input())\n",
+      "if numb<=5:\n",
+      "    print \"Good Choice!\"\n",
+      "print \"Thank You!\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Type an Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "3\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Good Choice!\n",
+        "Thank You!\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.2.1,page number:157"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter year : \"\n",
+      "year= int(input())\n",
+      "if year%4 == 0 and year%100 != 0 or year%400 == 0:\n",
+      "    print year,\"is a leap year\"\n",
+      "else:\n",
+      "    print year,\"is not a leap year\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter year : \n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1990\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1990 is not a leap year\n"
+       ]
+      }
+     ],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.3.1,page number:157"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter Year :\"\n",
+      "year=int(input())\n",
+      "if year%4 == 0 :\n",
+      "    if year % 100 != 0:\n",
+      "        print year,\"is leap year\"\n",
+      "    else:\n",
+      "        if year%400 == 0:\n",
+      "            print year,\" is leap year\"\n",
+      "else:\n",
+      "    print year,\"is not a leap year\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Year :\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1990\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1990 is not a leap year\n"
+       ]
+      }
+     ],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.3.2,page number:158"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter the number\"\n",
+      "numb =int(input())\n",
+      "if numb<=100:\n",
+      "    if numb>=30:\n",
+      "        print numb,\"lies between 30-100\"\n",
+      "    else:\n",
+      "        print numb,\"is outside 30-100\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the number\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "40\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "40 lies between 30-100\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.4.1,page number : 158"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter choice of city(1-4)\"\n",
+      "city = int(input())\n",
+      "if city == 1:\n",
+      "    print \"Madurai\"\n",
+      "elif city == 2:\n",
+      "    print \"Chennai\"\n",
+      "elif city == 3:\n",
+      "    print \"Mumbai\"\n",
+      "elif city == 4:\n",
+      "    print \"Calcutta\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter choice of city(1-4)\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "3\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Mumbai\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.5.1,page number:159"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "numb=int(input(\"Enter the number\"))\n",
+      "if numb == 0:\n",
+      "    print \"prints case0\"\n",
+      "elif numb == 1:\n",
+      "    print \"prints case1\"\n",
+      "elif numb == 2:\n",
+      "    print \"prints case2\" \n",
+      "else:\n",
+      "    print"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the number2\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "prints case2\n"
+       ]
+      }
+     ],
+     "prompt_number": 10
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.6.1,page number : 161"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "i =20\n",
+      "variable =array.array('i',[])\n",
+      "size = 0\n",
+      "\n",
+      "def get_array_size():\n",
+      "    print \"Array-size :\"\n",
+      "    global size\n",
+      "    size=int(input())\n",
+      "    if size<1 or size>i :\n",
+      "        get_array_size()\n",
+      "    \n",
+      "def input_fetch():\n",
+      "    global size\n",
+      "    global variabless\n",
+      "    for k in range(0,size):\n",
+      "        m=int(input())\n",
+      "        variable.append(m)\n",
+      "    return\n",
+      "\n",
+      "def sort_list():\n",
+      "    global variable\n",
+      "    variable= array.array('i',sorted(variable))\n",
+      "    \n",
+      "    return\n",
+      "    \n",
+      "def output():\n",
+      "    for k in range(0,size):\n",
+      "        print variable[k],\n",
+      "    return\n",
+      "\n",
+      "def even(number):\n",
+      "    if number/2 == 0:\n",
+      "        return 1\n",
+      "    else:\n",
+      "        return 0\n",
+      "\n",
+      "get_array_size()\n",
+      "input_fetch()\n",
+      "sort_list()\n",
+      "print \"The sorted list is :\"\n",
+      "output()\n",
+      "print \"\\nMedian : \",\n",
+      "\n",
+      "median=round((variable[(size/2)-1]+variable[size/2])/2,3) if even(size)  else float(variable[size/2])\n",
+      "print median"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Array-size :\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "10\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "7\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "8\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "-4\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "0\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "5\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "13\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "17\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "25\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The sorted list is :\n",
+        "-4 0 5 6 6 7 8 13 17 25 \n",
+        "Median :  7.0\n"
+       ]
+      }
+     ],
+     "prompt_number": 7
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.8.1,page number:163"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "index = 1\n",
+      "while index<12:\n",
+      "    print \"This is line \",index\n",
+      "    index+=1\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "This is line  1\n",
+        "This is line  2\n",
+        "This is line  3\n",
+        "This is line  4\n",
+        "This is line  5\n",
+        "This is line  6\n",
+        "This is line  7\n",
+        "This is line  8\n",
+        "This is line  9\n",
+        "This is line  10\n",
+        "This is line  11\n"
+       ]
+      }
+     ],
+     "prompt_number": 8
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.9.1,page number:164"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter Integer\"\n",
+      "total_sum=0\n",
+      "numb=int(input())\n",
+      "while numb>0:\n",
+      "    digit=numb %10\n",
+      "    total_sum+=digit\n",
+      "    numb/=10\n",
+      "print \"Sum is \",total_sum"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1776\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Sum is  21\n"
+       ]
+      }
+     ],
+     "prompt_number": 9
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.9.2,page number:165"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter Integer:\"\n",
+      "numb=int(input())\n",
+      "print numb,\"is reversed as \",\n",
+      "while numb>0:\n",
+      "    digit=numb%10\n",
+      "    print digit,\n",
+      "    numb/=10\n",
+      "print \"\\n\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer:\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1234\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1234 is reversed as  4 3 2 1 \n",
+        "\n"
+       ]
+      }
+     ],
+     "prompt_number": 10
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.10.1,page number:166"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "for index in range(1,11):\n",
+      "    print \" line \",index"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        " line  1\n",
+        " line  2\n",
+        " line  3\n",
+        " line  4\n",
+        " line  5\n",
+        " line  6\n",
+        " line  7\n",
+        " line  8\n",
+        " line  9\n",
+        " line  10\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.10.2,page number:166"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Result\"\n",
+      "print \"Index     Index Squared\"\n",
+      "print \"_____     _____________\"\n",
+      "for  index in range(1,11):\n",
+      "    print index,\"         \",index*index"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Result\n",
+        "Index     Index Squared\n",
+        "_____     _____________\n",
+        "1           1\n",
+        "2           4\n",
+        "3           9\n",
+        "4           16\n",
+        "5           25\n",
+        "6           36\n",
+        "7           49\n",
+        "8           64\n",
+        "9           81\n",
+        "10           100\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.10.3,page number:167"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "total_sum=0\n",
+      "value=100\n",
+      "for index in range(1,value+1):\n",
+      "    total_sum+=index\n",
+      "print \"Sum of 1 to \",value,\" = \",total_sum"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Sum of 1 to  100  =  5050\n"
+       ]
+      }
+     ],
+     "prompt_number": 4
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.11.1,page number:167"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def exceptive():\n",
+      "    for index in range(1,90):\n",
+      "        if index%5 == 0:\n",
+      "            continue\n",
+      "        print index\n",
+      "exceptive()"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1\n",
+        "2\n",
+        "3\n",
+        "4\n",
+        "6\n",
+        "7\n",
+        "8\n",
+        "9\n",
+        "11\n",
+        "12\n",
+        "13\n",
+        "14\n",
+        "16\n",
+        "17\n",
+        "18\n",
+        "19\n",
+        "21\n",
+        "22\n",
+        "23\n",
+        "24\n",
+        "26\n",
+        "27\n",
+        "28\n",
+        "29\n",
+        "31\n",
+        "32\n",
+        "33\n",
+        "34\n",
+        "36\n",
+        "37\n",
+        "38\n",
+        "39\n",
+        "41\n",
+        "42\n",
+        "43\n",
+        "44\n",
+        "46\n",
+        "47\n",
+        "48\n",
+        "49\n",
+        "51\n",
+        "52\n",
+        "53\n",
+        "54\n",
+        "56\n",
+        "57\n",
+        "58\n",
+        "59\n",
+        "61\n",
+        "62\n",
+        "63\n",
+        "64\n",
+        "66\n",
+        "67\n",
+        "68\n",
+        "69\n",
+        "71\n",
+        "72\n",
+        "73\n",
+        "74\n",
+        "76\n",
+        "77\n",
+        "78\n",
+        "79\n",
+        "81\n",
+        "82\n",
+        "83\n",
+        "84\n",
+        "86\n",
+        "87\n",
+        "88\n",
+        "89\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_12.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_12.ipynb
new file mode 100755
index 00000000..c59dc853
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_12.ipynb
@@ -0,0 +1,832 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:cf6bdce268b89df5f08741df390466a4ba8e95dbdba72ee30279eb61d19897af"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "9 : DECISION MAKING,BREAKING BRANCHING AND LOOPING"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.1.1,page number:156"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Type an Integer\"\n",
+      "numb=int(input())\n",
+      "if numb<=5:\n",
+      "    print \"Good Choice!\"\n",
+      "print \"Thank You!\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Type an Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "3\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Good Choice!\n",
+        "Thank You!\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.2.1,page number:157"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter year : \"\n",
+      "year= int(input())\n",
+      "if year%4 == 0 and year%100 != 0 or year%400 == 0:\n",
+      "    print year,\"is a leap year\"\n",
+      "else:\n",
+      "    print year,\"is not a leap year\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter year : \n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1990\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1990 is not a leap year\n"
+       ]
+      }
+     ],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.3.1,page number:157"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter Year :\"\n",
+      "year=int(input())\n",
+      "if year%4 == 0 :\n",
+      "    if year % 100 != 0:\n",
+      "        print year,\"is leap year\"\n",
+      "    else:\n",
+      "        if year%400 == 0:\n",
+      "            print year,\" is leap year\"\n",
+      "else:\n",
+      "    print year,\"is not a leap year\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Year :\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1990\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1990 is not a leap year\n"
+       ]
+      }
+     ],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.3.2,page number:158"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter the number\"\n",
+      "numb =int(input())\n",
+      "if numb<=100:\n",
+      "    if numb>=30:\n",
+      "        print numb,\"lies between 30-100\"\n",
+      "    else:\n",
+      "        print numb,\"is outside 30-100\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the number\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "40\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "40 lies between 30-100\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.4.1,page number : 158"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter choice of city(1-4)\"\n",
+      "city = int(input())\n",
+      "if city == 1:\n",
+      "    print \"Madurai\"\n",
+      "elif city == 2:\n",
+      "    print \"Chennai\"\n",
+      "elif city == 3:\n",
+      "    print \"Mumbai\"\n",
+      "elif city == 4:\n",
+      "    print \"Calcutta\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter choice of city(1-4)\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "3\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Mumbai\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.5.1,page number:159"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "numb=int(input(\"Enter the number\"))\n",
+      "if numb == 0:\n",
+      "    print \"prints case0\"\n",
+      "elif numb == 1:\n",
+      "    print \"prints case1\"\n",
+      "elif numb == 2:\n",
+      "    print \"prints case2\" \n",
+      "else:\n",
+      "    print"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the number2\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "prints case2\n"
+       ]
+      }
+     ],
+     "prompt_number": 10
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.6.1,page number : 161"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "i =20\n",
+      "variable =array.array('i',[])\n",
+      "size = 0\n",
+      "\n",
+      "def get_array_size():\n",
+      "    print \"Array-size :\"\n",
+      "    global size\n",
+      "    size=int(input())\n",
+      "    if size<1 or size>i :\n",
+      "        get_array_size()\n",
+      "    \n",
+      "def input_fetch():\n",
+      "    global size\n",
+      "    global variabless\n",
+      "    for k in range(0,size):\n",
+      "        m=int(input())\n",
+      "        variable.append(m)\n",
+      "    return\n",
+      "\n",
+      "def sort_list():\n",
+      "    global variable\n",
+      "    variable= array.array('i',sorted(variable))\n",
+      "    \n",
+      "    return\n",
+      "    \n",
+      "def output():\n",
+      "    for k in range(0,size):\n",
+      "        print variable[k],\n",
+      "    return\n",
+      "\n",
+      "def even(number):\n",
+      "    if number/2 == 0:\n",
+      "        return 1\n",
+      "    else:\n",
+      "        return 0\n",
+      "\n",
+      "get_array_size()\n",
+      "input_fetch()\n",
+      "sort_list()\n",
+      "print \"The sorted list is :\"\n",
+      "output()\n",
+      "print \"\\nMedian : \",\n",
+      "\n",
+      "median=round((variable[(size/2)-1]+variable[size/2])/2,3) if even(size)  else float(variable[size/2])\n",
+      "print median"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Array-size :\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "10\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "7\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "8\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "-4\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "0\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "5\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "13\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "17\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "25\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The sorted list is :\n",
+        "-4 0 5 6 6 7 8 13 17 25 \n",
+        "Median :  7.0\n"
+       ]
+      }
+     ],
+     "prompt_number": 7
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.8.1,page number:163"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "index = 1\n",
+      "while index<12:\n",
+      "    print \"This is line \",index\n",
+      "    index+=1\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "This is line  1\n",
+        "This is line  2\n",
+        "This is line  3\n",
+        "This is line  4\n",
+        "This is line  5\n",
+        "This is line  6\n",
+        "This is line  7\n",
+        "This is line  8\n",
+        "This is line  9\n",
+        "This is line  10\n",
+        "This is line  11\n"
+       ]
+      }
+     ],
+     "prompt_number": 8
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.9.1,page number:164"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter Integer\"\n",
+      "total_sum=0\n",
+      "numb=int(input())\n",
+      "while numb>0:\n",
+      "    digit=numb %10\n",
+      "    total_sum+=digit\n",
+      "    numb/=10\n",
+      "print \"Sum is \",total_sum"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1776\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Sum is  21\n"
+       ]
+      }
+     ],
+     "prompt_number": 9
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.9.2,page number:165"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter Integer:\"\n",
+      "numb=int(input())\n",
+      "print numb,\"is reversed as \",\n",
+      "while numb>0:\n",
+      "    digit=numb%10\n",
+      "    print digit,\n",
+      "    numb/=10\n",
+      "print \"\\n\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer:\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1234\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1234 is reversed as  4 3 2 1 \n",
+        "\n"
+       ]
+      }
+     ],
+     "prompt_number": 10
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.10.1,page number:166"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "for index in range(1,11):\n",
+      "    print \" line \",index"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        " line  1\n",
+        " line  2\n",
+        " line  3\n",
+        " line  4\n",
+        " line  5\n",
+        " line  6\n",
+        " line  7\n",
+        " line  8\n",
+        " line  9\n",
+        " line  10\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.10.2,page number:166"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Result\"\n",
+      "print \"Index     Index Squared\"\n",
+      "print \"_____     _____________\"\n",
+      "for  index in range(1,11):\n",
+      "    print index,\"         \",index*index"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Result\n",
+        "Index     Index Squared\n",
+        "_____     _____________\n",
+        "1           1\n",
+        "2           4\n",
+        "3           9\n",
+        "4           16\n",
+        "5           25\n",
+        "6           36\n",
+        "7           49\n",
+        "8           64\n",
+        "9           81\n",
+        "10           100\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.10.3,page number:167"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "total_sum=0\n",
+      "value=100\n",
+      "for index in range(1,value+1):\n",
+      "    total_sum+=index\n",
+      "print \"Sum of 1 to \",value,\" = \",total_sum"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Sum of 1 to  100  =  5050\n"
+       ]
+      }
+     ],
+     "prompt_number": 4
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.11.1,page number:167"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def exceptive():\n",
+      "    for index in range(1,90):\n",
+      "        if index%5 == 0:\n",
+      "            continue\n",
+      "        print index\n",
+      "exceptive()"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1\n",
+        "2\n",
+        "3\n",
+        "4\n",
+        "6\n",
+        "7\n",
+        "8\n",
+        "9\n",
+        "11\n",
+        "12\n",
+        "13\n",
+        "14\n",
+        "16\n",
+        "17\n",
+        "18\n",
+        "19\n",
+        "21\n",
+        "22\n",
+        "23\n",
+        "24\n",
+        "26\n",
+        "27\n",
+        "28\n",
+        "29\n",
+        "31\n",
+        "32\n",
+        "33\n",
+        "34\n",
+        "36\n",
+        "37\n",
+        "38\n",
+        "39\n",
+        "41\n",
+        "42\n",
+        "43\n",
+        "44\n",
+        "46\n",
+        "47\n",
+        "48\n",
+        "49\n",
+        "51\n",
+        "52\n",
+        "53\n",
+        "54\n",
+        "56\n",
+        "57\n",
+        "58\n",
+        "59\n",
+        "61\n",
+        "62\n",
+        "63\n",
+        "64\n",
+        "66\n",
+        "67\n",
+        "68\n",
+        "69\n",
+        "71\n",
+        "72\n",
+        "73\n",
+        "74\n",
+        "76\n",
+        "77\n",
+        "78\n",
+        "79\n",
+        "81\n",
+        "82\n",
+        "83\n",
+        "84\n",
+        "86\n",
+        "87\n",
+        "88\n",
+        "89\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_13.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_13.ipynb
new file mode 100755
index 00000000..c59dc853
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_13.ipynb
@@ -0,0 +1,832 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:cf6bdce268b89df5f08741df390466a4ba8e95dbdba72ee30279eb61d19897af"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "9 : DECISION MAKING,BREAKING BRANCHING AND LOOPING"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.1.1,page number:156"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Type an Integer\"\n",
+      "numb=int(input())\n",
+      "if numb<=5:\n",
+      "    print \"Good Choice!\"\n",
+      "print \"Thank You!\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Type an Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "3\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Good Choice!\n",
+        "Thank You!\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.2.1,page number:157"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter year : \"\n",
+      "year= int(input())\n",
+      "if year%4 == 0 and year%100 != 0 or year%400 == 0:\n",
+      "    print year,\"is a leap year\"\n",
+      "else:\n",
+      "    print year,\"is not a leap year\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter year : \n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1990\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1990 is not a leap year\n"
+       ]
+      }
+     ],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.3.1,page number:157"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter Year :\"\n",
+      "year=int(input())\n",
+      "if year%4 == 0 :\n",
+      "    if year % 100 != 0:\n",
+      "        print year,\"is leap year\"\n",
+      "    else:\n",
+      "        if year%400 == 0:\n",
+      "            print year,\" is leap year\"\n",
+      "else:\n",
+      "    print year,\"is not a leap year\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Year :\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1990\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1990 is not a leap year\n"
+       ]
+      }
+     ],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.3.2,page number:158"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter the number\"\n",
+      "numb =int(input())\n",
+      "if numb<=100:\n",
+      "    if numb>=30:\n",
+      "        print numb,\"lies between 30-100\"\n",
+      "    else:\n",
+      "        print numb,\"is outside 30-100\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the number\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "40\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "40 lies between 30-100\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.4.1,page number : 158"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter choice of city(1-4)\"\n",
+      "city = int(input())\n",
+      "if city == 1:\n",
+      "    print \"Madurai\"\n",
+      "elif city == 2:\n",
+      "    print \"Chennai\"\n",
+      "elif city == 3:\n",
+      "    print \"Mumbai\"\n",
+      "elif city == 4:\n",
+      "    print \"Calcutta\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter choice of city(1-4)\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "3\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Mumbai\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.5.1,page number:159"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "numb=int(input(\"Enter the number\"))\n",
+      "if numb == 0:\n",
+      "    print \"prints case0\"\n",
+      "elif numb == 1:\n",
+      "    print \"prints case1\"\n",
+      "elif numb == 2:\n",
+      "    print \"prints case2\" \n",
+      "else:\n",
+      "    print"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the number2\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "prints case2\n"
+       ]
+      }
+     ],
+     "prompt_number": 10
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.6.1,page number : 161"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "i =20\n",
+      "variable =array.array('i',[])\n",
+      "size = 0\n",
+      "\n",
+      "def get_array_size():\n",
+      "    print \"Array-size :\"\n",
+      "    global size\n",
+      "    size=int(input())\n",
+      "    if size<1 or size>i :\n",
+      "        get_array_size()\n",
+      "    \n",
+      "def input_fetch():\n",
+      "    global size\n",
+      "    global variabless\n",
+      "    for k in range(0,size):\n",
+      "        m=int(input())\n",
+      "        variable.append(m)\n",
+      "    return\n",
+      "\n",
+      "def sort_list():\n",
+      "    global variable\n",
+      "    variable= array.array('i',sorted(variable))\n",
+      "    \n",
+      "    return\n",
+      "    \n",
+      "def output():\n",
+      "    for k in range(0,size):\n",
+      "        print variable[k],\n",
+      "    return\n",
+      "\n",
+      "def even(number):\n",
+      "    if number/2 == 0:\n",
+      "        return 1\n",
+      "    else:\n",
+      "        return 0\n",
+      "\n",
+      "get_array_size()\n",
+      "input_fetch()\n",
+      "sort_list()\n",
+      "print \"The sorted list is :\"\n",
+      "output()\n",
+      "print \"\\nMedian : \",\n",
+      "\n",
+      "median=round((variable[(size/2)-1]+variable[size/2])/2,3) if even(size)  else float(variable[size/2])\n",
+      "print median"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Array-size :\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "10\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "7\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "8\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "-4\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "0\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "5\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "13\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "17\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "25\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The sorted list is :\n",
+        "-4 0 5 6 6 7 8 13 17 25 \n",
+        "Median :  7.0\n"
+       ]
+      }
+     ],
+     "prompt_number": 7
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.8.1,page number:163"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "index = 1\n",
+      "while index<12:\n",
+      "    print \"This is line \",index\n",
+      "    index+=1\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "This is line  1\n",
+        "This is line  2\n",
+        "This is line  3\n",
+        "This is line  4\n",
+        "This is line  5\n",
+        "This is line  6\n",
+        "This is line  7\n",
+        "This is line  8\n",
+        "This is line  9\n",
+        "This is line  10\n",
+        "This is line  11\n"
+       ]
+      }
+     ],
+     "prompt_number": 8
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.9.1,page number:164"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter Integer\"\n",
+      "total_sum=0\n",
+      "numb=int(input())\n",
+      "while numb>0:\n",
+      "    digit=numb %10\n",
+      "    total_sum+=digit\n",
+      "    numb/=10\n",
+      "print \"Sum is \",total_sum"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1776\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Sum is  21\n"
+       ]
+      }
+     ],
+     "prompt_number": 9
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.9.2,page number:165"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter Integer:\"\n",
+      "numb=int(input())\n",
+      "print numb,\"is reversed as \",\n",
+      "while numb>0:\n",
+      "    digit=numb%10\n",
+      "    print digit,\n",
+      "    numb/=10\n",
+      "print \"\\n\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer:\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1234\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1234 is reversed as  4 3 2 1 \n",
+        "\n"
+       ]
+      }
+     ],
+     "prompt_number": 10
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.10.1,page number:166"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "for index in range(1,11):\n",
+      "    print \" line \",index"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        " line  1\n",
+        " line  2\n",
+        " line  3\n",
+        " line  4\n",
+        " line  5\n",
+        " line  6\n",
+        " line  7\n",
+        " line  8\n",
+        " line  9\n",
+        " line  10\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.10.2,page number:166"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Result\"\n",
+      "print \"Index     Index Squared\"\n",
+      "print \"_____     _____________\"\n",
+      "for  index in range(1,11):\n",
+      "    print index,\"         \",index*index"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Result\n",
+        "Index     Index Squared\n",
+        "_____     _____________\n",
+        "1           1\n",
+        "2           4\n",
+        "3           9\n",
+        "4           16\n",
+        "5           25\n",
+        "6           36\n",
+        "7           49\n",
+        "8           64\n",
+        "9           81\n",
+        "10           100\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.10.3,page number:167"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "total_sum=0\n",
+      "value=100\n",
+      "for index in range(1,value+1):\n",
+      "    total_sum+=index\n",
+      "print \"Sum of 1 to \",value,\" = \",total_sum"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Sum of 1 to  100  =  5050\n"
+       ]
+      }
+     ],
+     "prompt_number": 4
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.11.1,page number:167"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def exceptive():\n",
+      "    for index in range(1,90):\n",
+      "        if index%5 == 0:\n",
+      "            continue\n",
+      "        print index\n",
+      "exceptive()"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1\n",
+        "2\n",
+        "3\n",
+        "4\n",
+        "6\n",
+        "7\n",
+        "8\n",
+        "9\n",
+        "11\n",
+        "12\n",
+        "13\n",
+        "14\n",
+        "16\n",
+        "17\n",
+        "18\n",
+        "19\n",
+        "21\n",
+        "22\n",
+        "23\n",
+        "24\n",
+        "26\n",
+        "27\n",
+        "28\n",
+        "29\n",
+        "31\n",
+        "32\n",
+        "33\n",
+        "34\n",
+        "36\n",
+        "37\n",
+        "38\n",
+        "39\n",
+        "41\n",
+        "42\n",
+        "43\n",
+        "44\n",
+        "46\n",
+        "47\n",
+        "48\n",
+        "49\n",
+        "51\n",
+        "52\n",
+        "53\n",
+        "54\n",
+        "56\n",
+        "57\n",
+        "58\n",
+        "59\n",
+        "61\n",
+        "62\n",
+        "63\n",
+        "64\n",
+        "66\n",
+        "67\n",
+        "68\n",
+        "69\n",
+        "71\n",
+        "72\n",
+        "73\n",
+        "74\n",
+        "76\n",
+        "77\n",
+        "78\n",
+        "79\n",
+        "81\n",
+        "82\n",
+        "83\n",
+        "84\n",
+        "86\n",
+        "87\n",
+        "88\n",
+        "89\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_14.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_14.ipynb
new file mode 100755
index 00000000..c59dc853
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_14.ipynb
@@ -0,0 +1,832 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:cf6bdce268b89df5f08741df390466a4ba8e95dbdba72ee30279eb61d19897af"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "9 : DECISION MAKING,BREAKING BRANCHING AND LOOPING"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.1.1,page number:156"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Type an Integer\"\n",
+      "numb=int(input())\n",
+      "if numb<=5:\n",
+      "    print \"Good Choice!\"\n",
+      "print \"Thank You!\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Type an Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "3\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Good Choice!\n",
+        "Thank You!\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.2.1,page number:157"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter year : \"\n",
+      "year= int(input())\n",
+      "if year%4 == 0 and year%100 != 0 or year%400 == 0:\n",
+      "    print year,\"is a leap year\"\n",
+      "else:\n",
+      "    print year,\"is not a leap year\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter year : \n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1990\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1990 is not a leap year\n"
+       ]
+      }
+     ],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.3.1,page number:157"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter Year :\"\n",
+      "year=int(input())\n",
+      "if year%4 == 0 :\n",
+      "    if year % 100 != 0:\n",
+      "        print year,\"is leap year\"\n",
+      "    else:\n",
+      "        if year%400 == 0:\n",
+      "            print year,\" is leap year\"\n",
+      "else:\n",
+      "    print year,\"is not a leap year\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Year :\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1990\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1990 is not a leap year\n"
+       ]
+      }
+     ],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.3.2,page number:158"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter the number\"\n",
+      "numb =int(input())\n",
+      "if numb<=100:\n",
+      "    if numb>=30:\n",
+      "        print numb,\"lies between 30-100\"\n",
+      "    else:\n",
+      "        print numb,\"is outside 30-100\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the number\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "40\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "40 lies between 30-100\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.4.1,page number : 158"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter choice of city(1-4)\"\n",
+      "city = int(input())\n",
+      "if city == 1:\n",
+      "    print \"Madurai\"\n",
+      "elif city == 2:\n",
+      "    print \"Chennai\"\n",
+      "elif city == 3:\n",
+      "    print \"Mumbai\"\n",
+      "elif city == 4:\n",
+      "    print \"Calcutta\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter choice of city(1-4)\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "3\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Mumbai\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.5.1,page number:159"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "numb=int(input(\"Enter the number\"))\n",
+      "if numb == 0:\n",
+      "    print \"prints case0\"\n",
+      "elif numb == 1:\n",
+      "    print \"prints case1\"\n",
+      "elif numb == 2:\n",
+      "    print \"prints case2\" \n",
+      "else:\n",
+      "    print"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the number2\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "prints case2\n"
+       ]
+      }
+     ],
+     "prompt_number": 10
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.6.1,page number : 161"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "i =20\n",
+      "variable =array.array('i',[])\n",
+      "size = 0\n",
+      "\n",
+      "def get_array_size():\n",
+      "    print \"Array-size :\"\n",
+      "    global size\n",
+      "    size=int(input())\n",
+      "    if size<1 or size>i :\n",
+      "        get_array_size()\n",
+      "    \n",
+      "def input_fetch():\n",
+      "    global size\n",
+      "    global variabless\n",
+      "    for k in range(0,size):\n",
+      "        m=int(input())\n",
+      "        variable.append(m)\n",
+      "    return\n",
+      "\n",
+      "def sort_list():\n",
+      "    global variable\n",
+      "    variable= array.array('i',sorted(variable))\n",
+      "    \n",
+      "    return\n",
+      "    \n",
+      "def output():\n",
+      "    for k in range(0,size):\n",
+      "        print variable[k],\n",
+      "    return\n",
+      "\n",
+      "def even(number):\n",
+      "    if number/2 == 0:\n",
+      "        return 1\n",
+      "    else:\n",
+      "        return 0\n",
+      "\n",
+      "get_array_size()\n",
+      "input_fetch()\n",
+      "sort_list()\n",
+      "print \"The sorted list is :\"\n",
+      "output()\n",
+      "print \"\\nMedian : \",\n",
+      "\n",
+      "median=round((variable[(size/2)-1]+variable[size/2])/2,3) if even(size)  else float(variable[size/2])\n",
+      "print median"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Array-size :\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "10\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "7\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "8\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "-4\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "0\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "5\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "13\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "17\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "25\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The sorted list is :\n",
+        "-4 0 5 6 6 7 8 13 17 25 \n",
+        "Median :  7.0\n"
+       ]
+      }
+     ],
+     "prompt_number": 7
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.8.1,page number:163"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "index = 1\n",
+      "while index<12:\n",
+      "    print \"This is line \",index\n",
+      "    index+=1\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "This is line  1\n",
+        "This is line  2\n",
+        "This is line  3\n",
+        "This is line  4\n",
+        "This is line  5\n",
+        "This is line  6\n",
+        "This is line  7\n",
+        "This is line  8\n",
+        "This is line  9\n",
+        "This is line  10\n",
+        "This is line  11\n"
+       ]
+      }
+     ],
+     "prompt_number": 8
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.9.1,page number:164"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter Integer\"\n",
+      "total_sum=0\n",
+      "numb=int(input())\n",
+      "while numb>0:\n",
+      "    digit=numb %10\n",
+      "    total_sum+=digit\n",
+      "    numb/=10\n",
+      "print \"Sum is \",total_sum"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1776\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Sum is  21\n"
+       ]
+      }
+     ],
+     "prompt_number": 9
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.9.2,page number:165"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter Integer:\"\n",
+      "numb=int(input())\n",
+      "print numb,\"is reversed as \",\n",
+      "while numb>0:\n",
+      "    digit=numb%10\n",
+      "    print digit,\n",
+      "    numb/=10\n",
+      "print \"\\n\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer:\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1234\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1234 is reversed as  4 3 2 1 \n",
+        "\n"
+       ]
+      }
+     ],
+     "prompt_number": 10
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.10.1,page number:166"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "for index in range(1,11):\n",
+      "    print \" line \",index"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        " line  1\n",
+        " line  2\n",
+        " line  3\n",
+        " line  4\n",
+        " line  5\n",
+        " line  6\n",
+        " line  7\n",
+        " line  8\n",
+        " line  9\n",
+        " line  10\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.10.2,page number:166"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Result\"\n",
+      "print \"Index     Index Squared\"\n",
+      "print \"_____     _____________\"\n",
+      "for  index in range(1,11):\n",
+      "    print index,\"         \",index*index"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Result\n",
+        "Index     Index Squared\n",
+        "_____     _____________\n",
+        "1           1\n",
+        "2           4\n",
+        "3           9\n",
+        "4           16\n",
+        "5           25\n",
+        "6           36\n",
+        "7           49\n",
+        "8           64\n",
+        "9           81\n",
+        "10           100\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.10.3,page number:167"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "total_sum=0\n",
+      "value=100\n",
+      "for index in range(1,value+1):\n",
+      "    total_sum+=index\n",
+      "print \"Sum of 1 to \",value,\" = \",total_sum"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Sum of 1 to  100  =  5050\n"
+       ]
+      }
+     ],
+     "prompt_number": 4
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.11.1,page number:167"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def exceptive():\n",
+      "    for index in range(1,90):\n",
+      "        if index%5 == 0:\n",
+      "            continue\n",
+      "        print index\n",
+      "exceptive()"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1\n",
+        "2\n",
+        "3\n",
+        "4\n",
+        "6\n",
+        "7\n",
+        "8\n",
+        "9\n",
+        "11\n",
+        "12\n",
+        "13\n",
+        "14\n",
+        "16\n",
+        "17\n",
+        "18\n",
+        "19\n",
+        "21\n",
+        "22\n",
+        "23\n",
+        "24\n",
+        "26\n",
+        "27\n",
+        "28\n",
+        "29\n",
+        "31\n",
+        "32\n",
+        "33\n",
+        "34\n",
+        "36\n",
+        "37\n",
+        "38\n",
+        "39\n",
+        "41\n",
+        "42\n",
+        "43\n",
+        "44\n",
+        "46\n",
+        "47\n",
+        "48\n",
+        "49\n",
+        "51\n",
+        "52\n",
+        "53\n",
+        "54\n",
+        "56\n",
+        "57\n",
+        "58\n",
+        "59\n",
+        "61\n",
+        "62\n",
+        "63\n",
+        "64\n",
+        "66\n",
+        "67\n",
+        "68\n",
+        "69\n",
+        "71\n",
+        "72\n",
+        "73\n",
+        "74\n",
+        "76\n",
+        "77\n",
+        "78\n",
+        "79\n",
+        "81\n",
+        "82\n",
+        "83\n",
+        "84\n",
+        "86\n",
+        "87\n",
+        "88\n",
+        "89\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_15.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_15.ipynb
new file mode 100755
index 00000000..c59dc853
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_15.ipynb
@@ -0,0 +1,832 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:cf6bdce268b89df5f08741df390466a4ba8e95dbdba72ee30279eb61d19897af"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "9 : DECISION MAKING,BREAKING BRANCHING AND LOOPING"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.1.1,page number:156"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Type an Integer\"\n",
+      "numb=int(input())\n",
+      "if numb<=5:\n",
+      "    print \"Good Choice!\"\n",
+      "print \"Thank You!\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Type an Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "3\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Good Choice!\n",
+        "Thank You!\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.2.1,page number:157"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter year : \"\n",
+      "year= int(input())\n",
+      "if year%4 == 0 and year%100 != 0 or year%400 == 0:\n",
+      "    print year,\"is a leap year\"\n",
+      "else:\n",
+      "    print year,\"is not a leap year\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter year : \n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1990\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1990 is not a leap year\n"
+       ]
+      }
+     ],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.3.1,page number:157"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter Year :\"\n",
+      "year=int(input())\n",
+      "if year%4 == 0 :\n",
+      "    if year % 100 != 0:\n",
+      "        print year,\"is leap year\"\n",
+      "    else:\n",
+      "        if year%400 == 0:\n",
+      "            print year,\" is leap year\"\n",
+      "else:\n",
+      "    print year,\"is not a leap year\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Year :\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1990\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1990 is not a leap year\n"
+       ]
+      }
+     ],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.3.2,page number:158"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter the number\"\n",
+      "numb =int(input())\n",
+      "if numb<=100:\n",
+      "    if numb>=30:\n",
+      "        print numb,\"lies between 30-100\"\n",
+      "    else:\n",
+      "        print numb,\"is outside 30-100\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the number\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "40\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "40 lies between 30-100\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.4.1,page number : 158"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter choice of city(1-4)\"\n",
+      "city = int(input())\n",
+      "if city == 1:\n",
+      "    print \"Madurai\"\n",
+      "elif city == 2:\n",
+      "    print \"Chennai\"\n",
+      "elif city == 3:\n",
+      "    print \"Mumbai\"\n",
+      "elif city == 4:\n",
+      "    print \"Calcutta\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter choice of city(1-4)\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "3\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Mumbai\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.5.1,page number:159"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "numb=int(input(\"Enter the number\"))\n",
+      "if numb == 0:\n",
+      "    print \"prints case0\"\n",
+      "elif numb == 1:\n",
+      "    print \"prints case1\"\n",
+      "elif numb == 2:\n",
+      "    print \"prints case2\" \n",
+      "else:\n",
+      "    print"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the number2\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "prints case2\n"
+       ]
+      }
+     ],
+     "prompt_number": 10
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.6.1,page number : 161"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "i =20\n",
+      "variable =array.array('i',[])\n",
+      "size = 0\n",
+      "\n",
+      "def get_array_size():\n",
+      "    print \"Array-size :\"\n",
+      "    global size\n",
+      "    size=int(input())\n",
+      "    if size<1 or size>i :\n",
+      "        get_array_size()\n",
+      "    \n",
+      "def input_fetch():\n",
+      "    global size\n",
+      "    global variabless\n",
+      "    for k in range(0,size):\n",
+      "        m=int(input())\n",
+      "        variable.append(m)\n",
+      "    return\n",
+      "\n",
+      "def sort_list():\n",
+      "    global variable\n",
+      "    variable= array.array('i',sorted(variable))\n",
+      "    \n",
+      "    return\n",
+      "    \n",
+      "def output():\n",
+      "    for k in range(0,size):\n",
+      "        print variable[k],\n",
+      "    return\n",
+      "\n",
+      "def even(number):\n",
+      "    if number/2 == 0:\n",
+      "        return 1\n",
+      "    else:\n",
+      "        return 0\n",
+      "\n",
+      "get_array_size()\n",
+      "input_fetch()\n",
+      "sort_list()\n",
+      "print \"The sorted list is :\"\n",
+      "output()\n",
+      "print \"\\nMedian : \",\n",
+      "\n",
+      "median=round((variable[(size/2)-1]+variable[size/2])/2,3) if even(size)  else float(variable[size/2])\n",
+      "print median"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Array-size :\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "10\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "7\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "8\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "-4\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "0\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "5\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "13\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "17\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "25\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The sorted list is :\n",
+        "-4 0 5 6 6 7 8 13 17 25 \n",
+        "Median :  7.0\n"
+       ]
+      }
+     ],
+     "prompt_number": 7
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.8.1,page number:163"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "index = 1\n",
+      "while index<12:\n",
+      "    print \"This is line \",index\n",
+      "    index+=1\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "This is line  1\n",
+        "This is line  2\n",
+        "This is line  3\n",
+        "This is line  4\n",
+        "This is line  5\n",
+        "This is line  6\n",
+        "This is line  7\n",
+        "This is line  8\n",
+        "This is line  9\n",
+        "This is line  10\n",
+        "This is line  11\n"
+       ]
+      }
+     ],
+     "prompt_number": 8
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.9.1,page number:164"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter Integer\"\n",
+      "total_sum=0\n",
+      "numb=int(input())\n",
+      "while numb>0:\n",
+      "    digit=numb %10\n",
+      "    total_sum+=digit\n",
+      "    numb/=10\n",
+      "print \"Sum is \",total_sum"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1776\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Sum is  21\n"
+       ]
+      }
+     ],
+     "prompt_number": 9
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.9.2,page number:165"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter Integer:\"\n",
+      "numb=int(input())\n",
+      "print numb,\"is reversed as \",\n",
+      "while numb>0:\n",
+      "    digit=numb%10\n",
+      "    print digit,\n",
+      "    numb/=10\n",
+      "print \"\\n\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer:\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1234\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1234 is reversed as  4 3 2 1 \n",
+        "\n"
+       ]
+      }
+     ],
+     "prompt_number": 10
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.10.1,page number:166"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "for index in range(1,11):\n",
+      "    print \" line \",index"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        " line  1\n",
+        " line  2\n",
+        " line  3\n",
+        " line  4\n",
+        " line  5\n",
+        " line  6\n",
+        " line  7\n",
+        " line  8\n",
+        " line  9\n",
+        " line  10\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.10.2,page number:166"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Result\"\n",
+      "print \"Index     Index Squared\"\n",
+      "print \"_____     _____________\"\n",
+      "for  index in range(1,11):\n",
+      "    print index,\"         \",index*index"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Result\n",
+        "Index     Index Squared\n",
+        "_____     _____________\n",
+        "1           1\n",
+        "2           4\n",
+        "3           9\n",
+        "4           16\n",
+        "5           25\n",
+        "6           36\n",
+        "7           49\n",
+        "8           64\n",
+        "9           81\n",
+        "10           100\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.10.3,page number:167"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "total_sum=0\n",
+      "value=100\n",
+      "for index in range(1,value+1):\n",
+      "    total_sum+=index\n",
+      "print \"Sum of 1 to \",value,\" = \",total_sum"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Sum of 1 to  100  =  5050\n"
+       ]
+      }
+     ],
+     "prompt_number": 4
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.11.1,page number:167"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def exceptive():\n",
+      "    for index in range(1,90):\n",
+      "        if index%5 == 0:\n",
+      "            continue\n",
+      "        print index\n",
+      "exceptive()"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1\n",
+        "2\n",
+        "3\n",
+        "4\n",
+        "6\n",
+        "7\n",
+        "8\n",
+        "9\n",
+        "11\n",
+        "12\n",
+        "13\n",
+        "14\n",
+        "16\n",
+        "17\n",
+        "18\n",
+        "19\n",
+        "21\n",
+        "22\n",
+        "23\n",
+        "24\n",
+        "26\n",
+        "27\n",
+        "28\n",
+        "29\n",
+        "31\n",
+        "32\n",
+        "33\n",
+        "34\n",
+        "36\n",
+        "37\n",
+        "38\n",
+        "39\n",
+        "41\n",
+        "42\n",
+        "43\n",
+        "44\n",
+        "46\n",
+        "47\n",
+        "48\n",
+        "49\n",
+        "51\n",
+        "52\n",
+        "53\n",
+        "54\n",
+        "56\n",
+        "57\n",
+        "58\n",
+        "59\n",
+        "61\n",
+        "62\n",
+        "63\n",
+        "64\n",
+        "66\n",
+        "67\n",
+        "68\n",
+        "69\n",
+        "71\n",
+        "72\n",
+        "73\n",
+        "74\n",
+        "76\n",
+        "77\n",
+        "78\n",
+        "79\n",
+        "81\n",
+        "82\n",
+        "83\n",
+        "84\n",
+        "86\n",
+        "87\n",
+        "88\n",
+        "89\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_2.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_2.ipynb
new file mode 100755
index 00000000..c59dc853
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_2.ipynb
@@ -0,0 +1,832 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:cf6bdce268b89df5f08741df390466a4ba8e95dbdba72ee30279eb61d19897af"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "9 : DECISION MAKING,BREAKING BRANCHING AND LOOPING"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.1.1,page number:156"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Type an Integer\"\n",
+      "numb=int(input())\n",
+      "if numb<=5:\n",
+      "    print \"Good Choice!\"\n",
+      "print \"Thank You!\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Type an Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "3\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Good Choice!\n",
+        "Thank You!\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.2.1,page number:157"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter year : \"\n",
+      "year= int(input())\n",
+      "if year%4 == 0 and year%100 != 0 or year%400 == 0:\n",
+      "    print year,\"is a leap year\"\n",
+      "else:\n",
+      "    print year,\"is not a leap year\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter year : \n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1990\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1990 is not a leap year\n"
+       ]
+      }
+     ],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.3.1,page number:157"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter Year :\"\n",
+      "year=int(input())\n",
+      "if year%4 == 0 :\n",
+      "    if year % 100 != 0:\n",
+      "        print year,\"is leap year\"\n",
+      "    else:\n",
+      "        if year%400 == 0:\n",
+      "            print year,\" is leap year\"\n",
+      "else:\n",
+      "    print year,\"is not a leap year\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Year :\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1990\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1990 is not a leap year\n"
+       ]
+      }
+     ],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.3.2,page number:158"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter the number\"\n",
+      "numb =int(input())\n",
+      "if numb<=100:\n",
+      "    if numb>=30:\n",
+      "        print numb,\"lies between 30-100\"\n",
+      "    else:\n",
+      "        print numb,\"is outside 30-100\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the number\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "40\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "40 lies between 30-100\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.4.1,page number : 158"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter choice of city(1-4)\"\n",
+      "city = int(input())\n",
+      "if city == 1:\n",
+      "    print \"Madurai\"\n",
+      "elif city == 2:\n",
+      "    print \"Chennai\"\n",
+      "elif city == 3:\n",
+      "    print \"Mumbai\"\n",
+      "elif city == 4:\n",
+      "    print \"Calcutta\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter choice of city(1-4)\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "3\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Mumbai\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.5.1,page number:159"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "numb=int(input(\"Enter the number\"))\n",
+      "if numb == 0:\n",
+      "    print \"prints case0\"\n",
+      "elif numb == 1:\n",
+      "    print \"prints case1\"\n",
+      "elif numb == 2:\n",
+      "    print \"prints case2\" \n",
+      "else:\n",
+      "    print"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the number2\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "prints case2\n"
+       ]
+      }
+     ],
+     "prompt_number": 10
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.6.1,page number : 161"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "i =20\n",
+      "variable =array.array('i',[])\n",
+      "size = 0\n",
+      "\n",
+      "def get_array_size():\n",
+      "    print \"Array-size :\"\n",
+      "    global size\n",
+      "    size=int(input())\n",
+      "    if size<1 or size>i :\n",
+      "        get_array_size()\n",
+      "    \n",
+      "def input_fetch():\n",
+      "    global size\n",
+      "    global variabless\n",
+      "    for k in range(0,size):\n",
+      "        m=int(input())\n",
+      "        variable.append(m)\n",
+      "    return\n",
+      "\n",
+      "def sort_list():\n",
+      "    global variable\n",
+      "    variable= array.array('i',sorted(variable))\n",
+      "    \n",
+      "    return\n",
+      "    \n",
+      "def output():\n",
+      "    for k in range(0,size):\n",
+      "        print variable[k],\n",
+      "    return\n",
+      "\n",
+      "def even(number):\n",
+      "    if number/2 == 0:\n",
+      "        return 1\n",
+      "    else:\n",
+      "        return 0\n",
+      "\n",
+      "get_array_size()\n",
+      "input_fetch()\n",
+      "sort_list()\n",
+      "print \"The sorted list is :\"\n",
+      "output()\n",
+      "print \"\\nMedian : \",\n",
+      "\n",
+      "median=round((variable[(size/2)-1]+variable[size/2])/2,3) if even(size)  else float(variable[size/2])\n",
+      "print median"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Array-size :\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "10\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "7\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "8\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "-4\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "0\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "5\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "13\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "17\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "25\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The sorted list is :\n",
+        "-4 0 5 6 6 7 8 13 17 25 \n",
+        "Median :  7.0\n"
+       ]
+      }
+     ],
+     "prompt_number": 7
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.8.1,page number:163"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "index = 1\n",
+      "while index<12:\n",
+      "    print \"This is line \",index\n",
+      "    index+=1\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "This is line  1\n",
+        "This is line  2\n",
+        "This is line  3\n",
+        "This is line  4\n",
+        "This is line  5\n",
+        "This is line  6\n",
+        "This is line  7\n",
+        "This is line  8\n",
+        "This is line  9\n",
+        "This is line  10\n",
+        "This is line  11\n"
+       ]
+      }
+     ],
+     "prompt_number": 8
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.9.1,page number:164"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter Integer\"\n",
+      "total_sum=0\n",
+      "numb=int(input())\n",
+      "while numb>0:\n",
+      "    digit=numb %10\n",
+      "    total_sum+=digit\n",
+      "    numb/=10\n",
+      "print \"Sum is \",total_sum"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1776\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Sum is  21\n"
+       ]
+      }
+     ],
+     "prompt_number": 9
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.9.2,page number:165"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter Integer:\"\n",
+      "numb=int(input())\n",
+      "print numb,\"is reversed as \",\n",
+      "while numb>0:\n",
+      "    digit=numb%10\n",
+      "    print digit,\n",
+      "    numb/=10\n",
+      "print \"\\n\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer:\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1234\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1234 is reversed as  4 3 2 1 \n",
+        "\n"
+       ]
+      }
+     ],
+     "prompt_number": 10
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.10.1,page number:166"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "for index in range(1,11):\n",
+      "    print \" line \",index"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        " line  1\n",
+        " line  2\n",
+        " line  3\n",
+        " line  4\n",
+        " line  5\n",
+        " line  6\n",
+        " line  7\n",
+        " line  8\n",
+        " line  9\n",
+        " line  10\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.10.2,page number:166"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Result\"\n",
+      "print \"Index     Index Squared\"\n",
+      "print \"_____     _____________\"\n",
+      "for  index in range(1,11):\n",
+      "    print index,\"         \",index*index"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Result\n",
+        "Index     Index Squared\n",
+        "_____     _____________\n",
+        "1           1\n",
+        "2           4\n",
+        "3           9\n",
+        "4           16\n",
+        "5           25\n",
+        "6           36\n",
+        "7           49\n",
+        "8           64\n",
+        "9           81\n",
+        "10           100\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.10.3,page number:167"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "total_sum=0\n",
+      "value=100\n",
+      "for index in range(1,value+1):\n",
+      "    total_sum+=index\n",
+      "print \"Sum of 1 to \",value,\" = \",total_sum"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Sum of 1 to  100  =  5050\n"
+       ]
+      }
+     ],
+     "prompt_number": 4
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.11.1,page number:167"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def exceptive():\n",
+      "    for index in range(1,90):\n",
+      "        if index%5 == 0:\n",
+      "            continue\n",
+      "        print index\n",
+      "exceptive()"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1\n",
+        "2\n",
+        "3\n",
+        "4\n",
+        "6\n",
+        "7\n",
+        "8\n",
+        "9\n",
+        "11\n",
+        "12\n",
+        "13\n",
+        "14\n",
+        "16\n",
+        "17\n",
+        "18\n",
+        "19\n",
+        "21\n",
+        "22\n",
+        "23\n",
+        "24\n",
+        "26\n",
+        "27\n",
+        "28\n",
+        "29\n",
+        "31\n",
+        "32\n",
+        "33\n",
+        "34\n",
+        "36\n",
+        "37\n",
+        "38\n",
+        "39\n",
+        "41\n",
+        "42\n",
+        "43\n",
+        "44\n",
+        "46\n",
+        "47\n",
+        "48\n",
+        "49\n",
+        "51\n",
+        "52\n",
+        "53\n",
+        "54\n",
+        "56\n",
+        "57\n",
+        "58\n",
+        "59\n",
+        "61\n",
+        "62\n",
+        "63\n",
+        "64\n",
+        "66\n",
+        "67\n",
+        "68\n",
+        "69\n",
+        "71\n",
+        "72\n",
+        "73\n",
+        "74\n",
+        "76\n",
+        "77\n",
+        "78\n",
+        "79\n",
+        "81\n",
+        "82\n",
+        "83\n",
+        "84\n",
+        "86\n",
+        "87\n",
+        "88\n",
+        "89\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_3.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_3.ipynb
new file mode 100755
index 00000000..c59dc853
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_3.ipynb
@@ -0,0 +1,832 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:cf6bdce268b89df5f08741df390466a4ba8e95dbdba72ee30279eb61d19897af"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "9 : DECISION MAKING,BREAKING BRANCHING AND LOOPING"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.1.1,page number:156"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Type an Integer\"\n",
+      "numb=int(input())\n",
+      "if numb<=5:\n",
+      "    print \"Good Choice!\"\n",
+      "print \"Thank You!\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Type an Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "3\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Good Choice!\n",
+        "Thank You!\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.2.1,page number:157"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter year : \"\n",
+      "year= int(input())\n",
+      "if year%4 == 0 and year%100 != 0 or year%400 == 0:\n",
+      "    print year,\"is a leap year\"\n",
+      "else:\n",
+      "    print year,\"is not a leap year\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter year : \n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1990\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1990 is not a leap year\n"
+       ]
+      }
+     ],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.3.1,page number:157"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter Year :\"\n",
+      "year=int(input())\n",
+      "if year%4 == 0 :\n",
+      "    if year % 100 != 0:\n",
+      "        print year,\"is leap year\"\n",
+      "    else:\n",
+      "        if year%400 == 0:\n",
+      "            print year,\" is leap year\"\n",
+      "else:\n",
+      "    print year,\"is not a leap year\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Year :\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1990\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1990 is not a leap year\n"
+       ]
+      }
+     ],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.3.2,page number:158"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter the number\"\n",
+      "numb =int(input())\n",
+      "if numb<=100:\n",
+      "    if numb>=30:\n",
+      "        print numb,\"lies between 30-100\"\n",
+      "    else:\n",
+      "        print numb,\"is outside 30-100\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the number\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "40\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "40 lies between 30-100\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.4.1,page number : 158"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter choice of city(1-4)\"\n",
+      "city = int(input())\n",
+      "if city == 1:\n",
+      "    print \"Madurai\"\n",
+      "elif city == 2:\n",
+      "    print \"Chennai\"\n",
+      "elif city == 3:\n",
+      "    print \"Mumbai\"\n",
+      "elif city == 4:\n",
+      "    print \"Calcutta\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter choice of city(1-4)\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "3\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Mumbai\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.5.1,page number:159"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "numb=int(input(\"Enter the number\"))\n",
+      "if numb == 0:\n",
+      "    print \"prints case0\"\n",
+      "elif numb == 1:\n",
+      "    print \"prints case1\"\n",
+      "elif numb == 2:\n",
+      "    print \"prints case2\" \n",
+      "else:\n",
+      "    print"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the number2\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "prints case2\n"
+       ]
+      }
+     ],
+     "prompt_number": 10
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.6.1,page number : 161"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "i =20\n",
+      "variable =array.array('i',[])\n",
+      "size = 0\n",
+      "\n",
+      "def get_array_size():\n",
+      "    print \"Array-size :\"\n",
+      "    global size\n",
+      "    size=int(input())\n",
+      "    if size<1 or size>i :\n",
+      "        get_array_size()\n",
+      "    \n",
+      "def input_fetch():\n",
+      "    global size\n",
+      "    global variabless\n",
+      "    for k in range(0,size):\n",
+      "        m=int(input())\n",
+      "        variable.append(m)\n",
+      "    return\n",
+      "\n",
+      "def sort_list():\n",
+      "    global variable\n",
+      "    variable= array.array('i',sorted(variable))\n",
+      "    \n",
+      "    return\n",
+      "    \n",
+      "def output():\n",
+      "    for k in range(0,size):\n",
+      "        print variable[k],\n",
+      "    return\n",
+      "\n",
+      "def even(number):\n",
+      "    if number/2 == 0:\n",
+      "        return 1\n",
+      "    else:\n",
+      "        return 0\n",
+      "\n",
+      "get_array_size()\n",
+      "input_fetch()\n",
+      "sort_list()\n",
+      "print \"The sorted list is :\"\n",
+      "output()\n",
+      "print \"\\nMedian : \",\n",
+      "\n",
+      "median=round((variable[(size/2)-1]+variable[size/2])/2,3) if even(size)  else float(variable[size/2])\n",
+      "print median"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Array-size :\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "10\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "7\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "8\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "-4\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "0\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "5\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "13\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "17\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "25\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The sorted list is :\n",
+        "-4 0 5 6 6 7 8 13 17 25 \n",
+        "Median :  7.0\n"
+       ]
+      }
+     ],
+     "prompt_number": 7
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.8.1,page number:163"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "index = 1\n",
+      "while index<12:\n",
+      "    print \"This is line \",index\n",
+      "    index+=1\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "This is line  1\n",
+        "This is line  2\n",
+        "This is line  3\n",
+        "This is line  4\n",
+        "This is line  5\n",
+        "This is line  6\n",
+        "This is line  7\n",
+        "This is line  8\n",
+        "This is line  9\n",
+        "This is line  10\n",
+        "This is line  11\n"
+       ]
+      }
+     ],
+     "prompt_number": 8
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.9.1,page number:164"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter Integer\"\n",
+      "total_sum=0\n",
+      "numb=int(input())\n",
+      "while numb>0:\n",
+      "    digit=numb %10\n",
+      "    total_sum+=digit\n",
+      "    numb/=10\n",
+      "print \"Sum is \",total_sum"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1776\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Sum is  21\n"
+       ]
+      }
+     ],
+     "prompt_number": 9
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.9.2,page number:165"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter Integer:\"\n",
+      "numb=int(input())\n",
+      "print numb,\"is reversed as \",\n",
+      "while numb>0:\n",
+      "    digit=numb%10\n",
+      "    print digit,\n",
+      "    numb/=10\n",
+      "print \"\\n\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer:\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1234\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1234 is reversed as  4 3 2 1 \n",
+        "\n"
+       ]
+      }
+     ],
+     "prompt_number": 10
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.10.1,page number:166"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "for index in range(1,11):\n",
+      "    print \" line \",index"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        " line  1\n",
+        " line  2\n",
+        " line  3\n",
+        " line  4\n",
+        " line  5\n",
+        " line  6\n",
+        " line  7\n",
+        " line  8\n",
+        " line  9\n",
+        " line  10\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.10.2,page number:166"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Result\"\n",
+      "print \"Index     Index Squared\"\n",
+      "print \"_____     _____________\"\n",
+      "for  index in range(1,11):\n",
+      "    print index,\"         \",index*index"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Result\n",
+        "Index     Index Squared\n",
+        "_____     _____________\n",
+        "1           1\n",
+        "2           4\n",
+        "3           9\n",
+        "4           16\n",
+        "5           25\n",
+        "6           36\n",
+        "7           49\n",
+        "8           64\n",
+        "9           81\n",
+        "10           100\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.10.3,page number:167"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "total_sum=0\n",
+      "value=100\n",
+      "for index in range(1,value+1):\n",
+      "    total_sum+=index\n",
+      "print \"Sum of 1 to \",value,\" = \",total_sum"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Sum of 1 to  100  =  5050\n"
+       ]
+      }
+     ],
+     "prompt_number": 4
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.11.1,page number:167"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def exceptive():\n",
+      "    for index in range(1,90):\n",
+      "        if index%5 == 0:\n",
+      "            continue\n",
+      "        print index\n",
+      "exceptive()"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1\n",
+        "2\n",
+        "3\n",
+        "4\n",
+        "6\n",
+        "7\n",
+        "8\n",
+        "9\n",
+        "11\n",
+        "12\n",
+        "13\n",
+        "14\n",
+        "16\n",
+        "17\n",
+        "18\n",
+        "19\n",
+        "21\n",
+        "22\n",
+        "23\n",
+        "24\n",
+        "26\n",
+        "27\n",
+        "28\n",
+        "29\n",
+        "31\n",
+        "32\n",
+        "33\n",
+        "34\n",
+        "36\n",
+        "37\n",
+        "38\n",
+        "39\n",
+        "41\n",
+        "42\n",
+        "43\n",
+        "44\n",
+        "46\n",
+        "47\n",
+        "48\n",
+        "49\n",
+        "51\n",
+        "52\n",
+        "53\n",
+        "54\n",
+        "56\n",
+        "57\n",
+        "58\n",
+        "59\n",
+        "61\n",
+        "62\n",
+        "63\n",
+        "64\n",
+        "66\n",
+        "67\n",
+        "68\n",
+        "69\n",
+        "71\n",
+        "72\n",
+        "73\n",
+        "74\n",
+        "76\n",
+        "77\n",
+        "78\n",
+        "79\n",
+        "81\n",
+        "82\n",
+        "83\n",
+        "84\n",
+        "86\n",
+        "87\n",
+        "88\n",
+        "89\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_4.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_4.ipynb
new file mode 100755
index 00000000..c59dc853
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_4.ipynb
@@ -0,0 +1,832 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:cf6bdce268b89df5f08741df390466a4ba8e95dbdba72ee30279eb61d19897af"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "9 : DECISION MAKING,BREAKING BRANCHING AND LOOPING"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.1.1,page number:156"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Type an Integer\"\n",
+      "numb=int(input())\n",
+      "if numb<=5:\n",
+      "    print \"Good Choice!\"\n",
+      "print \"Thank You!\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Type an Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "3\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Good Choice!\n",
+        "Thank You!\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.2.1,page number:157"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter year : \"\n",
+      "year= int(input())\n",
+      "if year%4 == 0 and year%100 != 0 or year%400 == 0:\n",
+      "    print year,\"is a leap year\"\n",
+      "else:\n",
+      "    print year,\"is not a leap year\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter year : \n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1990\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1990 is not a leap year\n"
+       ]
+      }
+     ],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.3.1,page number:157"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter Year :\"\n",
+      "year=int(input())\n",
+      "if year%4 == 0 :\n",
+      "    if year % 100 != 0:\n",
+      "        print year,\"is leap year\"\n",
+      "    else:\n",
+      "        if year%400 == 0:\n",
+      "            print year,\" is leap year\"\n",
+      "else:\n",
+      "    print year,\"is not a leap year\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Year :\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1990\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1990 is not a leap year\n"
+       ]
+      }
+     ],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.3.2,page number:158"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter the number\"\n",
+      "numb =int(input())\n",
+      "if numb<=100:\n",
+      "    if numb>=30:\n",
+      "        print numb,\"lies between 30-100\"\n",
+      "    else:\n",
+      "        print numb,\"is outside 30-100\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the number\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "40\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "40 lies between 30-100\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.4.1,page number : 158"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter choice of city(1-4)\"\n",
+      "city = int(input())\n",
+      "if city == 1:\n",
+      "    print \"Madurai\"\n",
+      "elif city == 2:\n",
+      "    print \"Chennai\"\n",
+      "elif city == 3:\n",
+      "    print \"Mumbai\"\n",
+      "elif city == 4:\n",
+      "    print \"Calcutta\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter choice of city(1-4)\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "3\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Mumbai\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.5.1,page number:159"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "numb=int(input(\"Enter the number\"))\n",
+      "if numb == 0:\n",
+      "    print \"prints case0\"\n",
+      "elif numb == 1:\n",
+      "    print \"prints case1\"\n",
+      "elif numb == 2:\n",
+      "    print \"prints case2\" \n",
+      "else:\n",
+      "    print"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the number2\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "prints case2\n"
+       ]
+      }
+     ],
+     "prompt_number": 10
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.6.1,page number : 161"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "i =20\n",
+      "variable =array.array('i',[])\n",
+      "size = 0\n",
+      "\n",
+      "def get_array_size():\n",
+      "    print \"Array-size :\"\n",
+      "    global size\n",
+      "    size=int(input())\n",
+      "    if size<1 or size>i :\n",
+      "        get_array_size()\n",
+      "    \n",
+      "def input_fetch():\n",
+      "    global size\n",
+      "    global variabless\n",
+      "    for k in range(0,size):\n",
+      "        m=int(input())\n",
+      "        variable.append(m)\n",
+      "    return\n",
+      "\n",
+      "def sort_list():\n",
+      "    global variable\n",
+      "    variable= array.array('i',sorted(variable))\n",
+      "    \n",
+      "    return\n",
+      "    \n",
+      "def output():\n",
+      "    for k in range(0,size):\n",
+      "        print variable[k],\n",
+      "    return\n",
+      "\n",
+      "def even(number):\n",
+      "    if number/2 == 0:\n",
+      "        return 1\n",
+      "    else:\n",
+      "        return 0\n",
+      "\n",
+      "get_array_size()\n",
+      "input_fetch()\n",
+      "sort_list()\n",
+      "print \"The sorted list is :\"\n",
+      "output()\n",
+      "print \"\\nMedian : \",\n",
+      "\n",
+      "median=round((variable[(size/2)-1]+variable[size/2])/2,3) if even(size)  else float(variable[size/2])\n",
+      "print median"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Array-size :\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "10\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "7\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "8\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "-4\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "0\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "5\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "13\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "17\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "25\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The sorted list is :\n",
+        "-4 0 5 6 6 7 8 13 17 25 \n",
+        "Median :  7.0\n"
+       ]
+      }
+     ],
+     "prompt_number": 7
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.8.1,page number:163"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "index = 1\n",
+      "while index<12:\n",
+      "    print \"This is line \",index\n",
+      "    index+=1\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "This is line  1\n",
+        "This is line  2\n",
+        "This is line  3\n",
+        "This is line  4\n",
+        "This is line  5\n",
+        "This is line  6\n",
+        "This is line  7\n",
+        "This is line  8\n",
+        "This is line  9\n",
+        "This is line  10\n",
+        "This is line  11\n"
+       ]
+      }
+     ],
+     "prompt_number": 8
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.9.1,page number:164"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter Integer\"\n",
+      "total_sum=0\n",
+      "numb=int(input())\n",
+      "while numb>0:\n",
+      "    digit=numb %10\n",
+      "    total_sum+=digit\n",
+      "    numb/=10\n",
+      "print \"Sum is \",total_sum"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1776\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Sum is  21\n"
+       ]
+      }
+     ],
+     "prompt_number": 9
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.9.2,page number:165"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter Integer:\"\n",
+      "numb=int(input())\n",
+      "print numb,\"is reversed as \",\n",
+      "while numb>0:\n",
+      "    digit=numb%10\n",
+      "    print digit,\n",
+      "    numb/=10\n",
+      "print \"\\n\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer:\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1234\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1234 is reversed as  4 3 2 1 \n",
+        "\n"
+       ]
+      }
+     ],
+     "prompt_number": 10
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.10.1,page number:166"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "for index in range(1,11):\n",
+      "    print \" line \",index"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        " line  1\n",
+        " line  2\n",
+        " line  3\n",
+        " line  4\n",
+        " line  5\n",
+        " line  6\n",
+        " line  7\n",
+        " line  8\n",
+        " line  9\n",
+        " line  10\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.10.2,page number:166"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Result\"\n",
+      "print \"Index     Index Squared\"\n",
+      "print \"_____     _____________\"\n",
+      "for  index in range(1,11):\n",
+      "    print index,\"         \",index*index"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Result\n",
+        "Index     Index Squared\n",
+        "_____     _____________\n",
+        "1           1\n",
+        "2           4\n",
+        "3           9\n",
+        "4           16\n",
+        "5           25\n",
+        "6           36\n",
+        "7           49\n",
+        "8           64\n",
+        "9           81\n",
+        "10           100\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.10.3,page number:167"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "total_sum=0\n",
+      "value=100\n",
+      "for index in range(1,value+1):\n",
+      "    total_sum+=index\n",
+      "print \"Sum of 1 to \",value,\" = \",total_sum"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Sum of 1 to  100  =  5050\n"
+       ]
+      }
+     ],
+     "prompt_number": 4
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.11.1,page number:167"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def exceptive():\n",
+      "    for index in range(1,90):\n",
+      "        if index%5 == 0:\n",
+      "            continue\n",
+      "        print index\n",
+      "exceptive()"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1\n",
+        "2\n",
+        "3\n",
+        "4\n",
+        "6\n",
+        "7\n",
+        "8\n",
+        "9\n",
+        "11\n",
+        "12\n",
+        "13\n",
+        "14\n",
+        "16\n",
+        "17\n",
+        "18\n",
+        "19\n",
+        "21\n",
+        "22\n",
+        "23\n",
+        "24\n",
+        "26\n",
+        "27\n",
+        "28\n",
+        "29\n",
+        "31\n",
+        "32\n",
+        "33\n",
+        "34\n",
+        "36\n",
+        "37\n",
+        "38\n",
+        "39\n",
+        "41\n",
+        "42\n",
+        "43\n",
+        "44\n",
+        "46\n",
+        "47\n",
+        "48\n",
+        "49\n",
+        "51\n",
+        "52\n",
+        "53\n",
+        "54\n",
+        "56\n",
+        "57\n",
+        "58\n",
+        "59\n",
+        "61\n",
+        "62\n",
+        "63\n",
+        "64\n",
+        "66\n",
+        "67\n",
+        "68\n",
+        "69\n",
+        "71\n",
+        "72\n",
+        "73\n",
+        "74\n",
+        "76\n",
+        "77\n",
+        "78\n",
+        "79\n",
+        "81\n",
+        "82\n",
+        "83\n",
+        "84\n",
+        "86\n",
+        "87\n",
+        "88\n",
+        "89\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_5.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_5.ipynb
new file mode 100755
index 00000000..c59dc853
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_5.ipynb
@@ -0,0 +1,832 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:cf6bdce268b89df5f08741df390466a4ba8e95dbdba72ee30279eb61d19897af"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "9 : DECISION MAKING,BREAKING BRANCHING AND LOOPING"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.1.1,page number:156"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Type an Integer\"\n",
+      "numb=int(input())\n",
+      "if numb<=5:\n",
+      "    print \"Good Choice!\"\n",
+      "print \"Thank You!\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Type an Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "3\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Good Choice!\n",
+        "Thank You!\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.2.1,page number:157"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter year : \"\n",
+      "year= int(input())\n",
+      "if year%4 == 0 and year%100 != 0 or year%400 == 0:\n",
+      "    print year,\"is a leap year\"\n",
+      "else:\n",
+      "    print year,\"is not a leap year\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter year : \n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1990\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1990 is not a leap year\n"
+       ]
+      }
+     ],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.3.1,page number:157"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter Year :\"\n",
+      "year=int(input())\n",
+      "if year%4 == 0 :\n",
+      "    if year % 100 != 0:\n",
+      "        print year,\"is leap year\"\n",
+      "    else:\n",
+      "        if year%400 == 0:\n",
+      "            print year,\" is leap year\"\n",
+      "else:\n",
+      "    print year,\"is not a leap year\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Year :\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1990\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1990 is not a leap year\n"
+       ]
+      }
+     ],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.3.2,page number:158"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter the number\"\n",
+      "numb =int(input())\n",
+      "if numb<=100:\n",
+      "    if numb>=30:\n",
+      "        print numb,\"lies between 30-100\"\n",
+      "    else:\n",
+      "        print numb,\"is outside 30-100\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the number\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "40\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "40 lies between 30-100\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.4.1,page number : 158"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter choice of city(1-4)\"\n",
+      "city = int(input())\n",
+      "if city == 1:\n",
+      "    print \"Madurai\"\n",
+      "elif city == 2:\n",
+      "    print \"Chennai\"\n",
+      "elif city == 3:\n",
+      "    print \"Mumbai\"\n",
+      "elif city == 4:\n",
+      "    print \"Calcutta\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter choice of city(1-4)\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "3\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Mumbai\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.5.1,page number:159"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "numb=int(input(\"Enter the number\"))\n",
+      "if numb == 0:\n",
+      "    print \"prints case0\"\n",
+      "elif numb == 1:\n",
+      "    print \"prints case1\"\n",
+      "elif numb == 2:\n",
+      "    print \"prints case2\" \n",
+      "else:\n",
+      "    print"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the number2\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "prints case2\n"
+       ]
+      }
+     ],
+     "prompt_number": 10
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.6.1,page number : 161"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "i =20\n",
+      "variable =array.array('i',[])\n",
+      "size = 0\n",
+      "\n",
+      "def get_array_size():\n",
+      "    print \"Array-size :\"\n",
+      "    global size\n",
+      "    size=int(input())\n",
+      "    if size<1 or size>i :\n",
+      "        get_array_size()\n",
+      "    \n",
+      "def input_fetch():\n",
+      "    global size\n",
+      "    global variabless\n",
+      "    for k in range(0,size):\n",
+      "        m=int(input())\n",
+      "        variable.append(m)\n",
+      "    return\n",
+      "\n",
+      "def sort_list():\n",
+      "    global variable\n",
+      "    variable= array.array('i',sorted(variable))\n",
+      "    \n",
+      "    return\n",
+      "    \n",
+      "def output():\n",
+      "    for k in range(0,size):\n",
+      "        print variable[k],\n",
+      "    return\n",
+      "\n",
+      "def even(number):\n",
+      "    if number/2 == 0:\n",
+      "        return 1\n",
+      "    else:\n",
+      "        return 0\n",
+      "\n",
+      "get_array_size()\n",
+      "input_fetch()\n",
+      "sort_list()\n",
+      "print \"The sorted list is :\"\n",
+      "output()\n",
+      "print \"\\nMedian : \",\n",
+      "\n",
+      "median=round((variable[(size/2)-1]+variable[size/2])/2,3) if even(size)  else float(variable[size/2])\n",
+      "print median"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Array-size :\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "10\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "7\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "8\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "-4\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "0\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "5\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "13\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "17\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "25\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The sorted list is :\n",
+        "-4 0 5 6 6 7 8 13 17 25 \n",
+        "Median :  7.0\n"
+       ]
+      }
+     ],
+     "prompt_number": 7
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.8.1,page number:163"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "index = 1\n",
+      "while index<12:\n",
+      "    print \"This is line \",index\n",
+      "    index+=1\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "This is line  1\n",
+        "This is line  2\n",
+        "This is line  3\n",
+        "This is line  4\n",
+        "This is line  5\n",
+        "This is line  6\n",
+        "This is line  7\n",
+        "This is line  8\n",
+        "This is line  9\n",
+        "This is line  10\n",
+        "This is line  11\n"
+       ]
+      }
+     ],
+     "prompt_number": 8
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.9.1,page number:164"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter Integer\"\n",
+      "total_sum=0\n",
+      "numb=int(input())\n",
+      "while numb>0:\n",
+      "    digit=numb %10\n",
+      "    total_sum+=digit\n",
+      "    numb/=10\n",
+      "print \"Sum is \",total_sum"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1776\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Sum is  21\n"
+       ]
+      }
+     ],
+     "prompt_number": 9
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.9.2,page number:165"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter Integer:\"\n",
+      "numb=int(input())\n",
+      "print numb,\"is reversed as \",\n",
+      "while numb>0:\n",
+      "    digit=numb%10\n",
+      "    print digit,\n",
+      "    numb/=10\n",
+      "print \"\\n\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer:\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1234\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1234 is reversed as  4 3 2 1 \n",
+        "\n"
+       ]
+      }
+     ],
+     "prompt_number": 10
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.10.1,page number:166"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "for index in range(1,11):\n",
+      "    print \" line \",index"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        " line  1\n",
+        " line  2\n",
+        " line  3\n",
+        " line  4\n",
+        " line  5\n",
+        " line  6\n",
+        " line  7\n",
+        " line  8\n",
+        " line  9\n",
+        " line  10\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.10.2,page number:166"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Result\"\n",
+      "print \"Index     Index Squared\"\n",
+      "print \"_____     _____________\"\n",
+      "for  index in range(1,11):\n",
+      "    print index,\"         \",index*index"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Result\n",
+        "Index     Index Squared\n",
+        "_____     _____________\n",
+        "1           1\n",
+        "2           4\n",
+        "3           9\n",
+        "4           16\n",
+        "5           25\n",
+        "6           36\n",
+        "7           49\n",
+        "8           64\n",
+        "9           81\n",
+        "10           100\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.10.3,page number:167"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "total_sum=0\n",
+      "value=100\n",
+      "for index in range(1,value+1):\n",
+      "    total_sum+=index\n",
+      "print \"Sum of 1 to \",value,\" = \",total_sum"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Sum of 1 to  100  =  5050\n"
+       ]
+      }
+     ],
+     "prompt_number": 4
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.11.1,page number:167"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def exceptive():\n",
+      "    for index in range(1,90):\n",
+      "        if index%5 == 0:\n",
+      "            continue\n",
+      "        print index\n",
+      "exceptive()"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1\n",
+        "2\n",
+        "3\n",
+        "4\n",
+        "6\n",
+        "7\n",
+        "8\n",
+        "9\n",
+        "11\n",
+        "12\n",
+        "13\n",
+        "14\n",
+        "16\n",
+        "17\n",
+        "18\n",
+        "19\n",
+        "21\n",
+        "22\n",
+        "23\n",
+        "24\n",
+        "26\n",
+        "27\n",
+        "28\n",
+        "29\n",
+        "31\n",
+        "32\n",
+        "33\n",
+        "34\n",
+        "36\n",
+        "37\n",
+        "38\n",
+        "39\n",
+        "41\n",
+        "42\n",
+        "43\n",
+        "44\n",
+        "46\n",
+        "47\n",
+        "48\n",
+        "49\n",
+        "51\n",
+        "52\n",
+        "53\n",
+        "54\n",
+        "56\n",
+        "57\n",
+        "58\n",
+        "59\n",
+        "61\n",
+        "62\n",
+        "63\n",
+        "64\n",
+        "66\n",
+        "67\n",
+        "68\n",
+        "69\n",
+        "71\n",
+        "72\n",
+        "73\n",
+        "74\n",
+        "76\n",
+        "77\n",
+        "78\n",
+        "79\n",
+        "81\n",
+        "82\n",
+        "83\n",
+        "84\n",
+        "86\n",
+        "87\n",
+        "88\n",
+        "89\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_6.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_6.ipynb
new file mode 100755
index 00000000..c59dc853
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_6.ipynb
@@ -0,0 +1,832 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:cf6bdce268b89df5f08741df390466a4ba8e95dbdba72ee30279eb61d19897af"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "9 : DECISION MAKING,BREAKING BRANCHING AND LOOPING"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.1.1,page number:156"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Type an Integer\"\n",
+      "numb=int(input())\n",
+      "if numb<=5:\n",
+      "    print \"Good Choice!\"\n",
+      "print \"Thank You!\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Type an Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "3\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Good Choice!\n",
+        "Thank You!\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.2.1,page number:157"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter year : \"\n",
+      "year= int(input())\n",
+      "if year%4 == 0 and year%100 != 0 or year%400 == 0:\n",
+      "    print year,\"is a leap year\"\n",
+      "else:\n",
+      "    print year,\"is not a leap year\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter year : \n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1990\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1990 is not a leap year\n"
+       ]
+      }
+     ],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.3.1,page number:157"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter Year :\"\n",
+      "year=int(input())\n",
+      "if year%4 == 0 :\n",
+      "    if year % 100 != 0:\n",
+      "        print year,\"is leap year\"\n",
+      "    else:\n",
+      "        if year%400 == 0:\n",
+      "            print year,\" is leap year\"\n",
+      "else:\n",
+      "    print year,\"is not a leap year\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Year :\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1990\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1990 is not a leap year\n"
+       ]
+      }
+     ],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.3.2,page number:158"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter the number\"\n",
+      "numb =int(input())\n",
+      "if numb<=100:\n",
+      "    if numb>=30:\n",
+      "        print numb,\"lies between 30-100\"\n",
+      "    else:\n",
+      "        print numb,\"is outside 30-100\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the number\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "40\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "40 lies between 30-100\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.4.1,page number : 158"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter choice of city(1-4)\"\n",
+      "city = int(input())\n",
+      "if city == 1:\n",
+      "    print \"Madurai\"\n",
+      "elif city == 2:\n",
+      "    print \"Chennai\"\n",
+      "elif city == 3:\n",
+      "    print \"Mumbai\"\n",
+      "elif city == 4:\n",
+      "    print \"Calcutta\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter choice of city(1-4)\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "3\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Mumbai\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.5.1,page number:159"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "numb=int(input(\"Enter the number\"))\n",
+      "if numb == 0:\n",
+      "    print \"prints case0\"\n",
+      "elif numb == 1:\n",
+      "    print \"prints case1\"\n",
+      "elif numb == 2:\n",
+      "    print \"prints case2\" \n",
+      "else:\n",
+      "    print"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the number2\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "prints case2\n"
+       ]
+      }
+     ],
+     "prompt_number": 10
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.6.1,page number : 161"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "i =20\n",
+      "variable =array.array('i',[])\n",
+      "size = 0\n",
+      "\n",
+      "def get_array_size():\n",
+      "    print \"Array-size :\"\n",
+      "    global size\n",
+      "    size=int(input())\n",
+      "    if size<1 or size>i :\n",
+      "        get_array_size()\n",
+      "    \n",
+      "def input_fetch():\n",
+      "    global size\n",
+      "    global variabless\n",
+      "    for k in range(0,size):\n",
+      "        m=int(input())\n",
+      "        variable.append(m)\n",
+      "    return\n",
+      "\n",
+      "def sort_list():\n",
+      "    global variable\n",
+      "    variable= array.array('i',sorted(variable))\n",
+      "    \n",
+      "    return\n",
+      "    \n",
+      "def output():\n",
+      "    for k in range(0,size):\n",
+      "        print variable[k],\n",
+      "    return\n",
+      "\n",
+      "def even(number):\n",
+      "    if number/2 == 0:\n",
+      "        return 1\n",
+      "    else:\n",
+      "        return 0\n",
+      "\n",
+      "get_array_size()\n",
+      "input_fetch()\n",
+      "sort_list()\n",
+      "print \"The sorted list is :\"\n",
+      "output()\n",
+      "print \"\\nMedian : \",\n",
+      "\n",
+      "median=round((variable[(size/2)-1]+variable[size/2])/2,3) if even(size)  else float(variable[size/2])\n",
+      "print median"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Array-size :\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "10\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "7\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "8\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "-4\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "0\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "5\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "13\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "17\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "25\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The sorted list is :\n",
+        "-4 0 5 6 6 7 8 13 17 25 \n",
+        "Median :  7.0\n"
+       ]
+      }
+     ],
+     "prompt_number": 7
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.8.1,page number:163"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "index = 1\n",
+      "while index<12:\n",
+      "    print \"This is line \",index\n",
+      "    index+=1\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "This is line  1\n",
+        "This is line  2\n",
+        "This is line  3\n",
+        "This is line  4\n",
+        "This is line  5\n",
+        "This is line  6\n",
+        "This is line  7\n",
+        "This is line  8\n",
+        "This is line  9\n",
+        "This is line  10\n",
+        "This is line  11\n"
+       ]
+      }
+     ],
+     "prompt_number": 8
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.9.1,page number:164"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter Integer\"\n",
+      "total_sum=0\n",
+      "numb=int(input())\n",
+      "while numb>0:\n",
+      "    digit=numb %10\n",
+      "    total_sum+=digit\n",
+      "    numb/=10\n",
+      "print \"Sum is \",total_sum"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1776\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Sum is  21\n"
+       ]
+      }
+     ],
+     "prompt_number": 9
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.9.2,page number:165"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter Integer:\"\n",
+      "numb=int(input())\n",
+      "print numb,\"is reversed as \",\n",
+      "while numb>0:\n",
+      "    digit=numb%10\n",
+      "    print digit,\n",
+      "    numb/=10\n",
+      "print \"\\n\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer:\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1234\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1234 is reversed as  4 3 2 1 \n",
+        "\n"
+       ]
+      }
+     ],
+     "prompt_number": 10
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.10.1,page number:166"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "for index in range(1,11):\n",
+      "    print \" line \",index"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        " line  1\n",
+        " line  2\n",
+        " line  3\n",
+        " line  4\n",
+        " line  5\n",
+        " line  6\n",
+        " line  7\n",
+        " line  8\n",
+        " line  9\n",
+        " line  10\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.10.2,page number:166"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Result\"\n",
+      "print \"Index     Index Squared\"\n",
+      "print \"_____     _____________\"\n",
+      "for  index in range(1,11):\n",
+      "    print index,\"         \",index*index"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Result\n",
+        "Index     Index Squared\n",
+        "_____     _____________\n",
+        "1           1\n",
+        "2           4\n",
+        "3           9\n",
+        "4           16\n",
+        "5           25\n",
+        "6           36\n",
+        "7           49\n",
+        "8           64\n",
+        "9           81\n",
+        "10           100\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.10.3,page number:167"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "total_sum=0\n",
+      "value=100\n",
+      "for index in range(1,value+1):\n",
+      "    total_sum+=index\n",
+      "print \"Sum of 1 to \",value,\" = \",total_sum"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Sum of 1 to  100  =  5050\n"
+       ]
+      }
+     ],
+     "prompt_number": 4
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.11.1,page number:167"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def exceptive():\n",
+      "    for index in range(1,90):\n",
+      "        if index%5 == 0:\n",
+      "            continue\n",
+      "        print index\n",
+      "exceptive()"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1\n",
+        "2\n",
+        "3\n",
+        "4\n",
+        "6\n",
+        "7\n",
+        "8\n",
+        "9\n",
+        "11\n",
+        "12\n",
+        "13\n",
+        "14\n",
+        "16\n",
+        "17\n",
+        "18\n",
+        "19\n",
+        "21\n",
+        "22\n",
+        "23\n",
+        "24\n",
+        "26\n",
+        "27\n",
+        "28\n",
+        "29\n",
+        "31\n",
+        "32\n",
+        "33\n",
+        "34\n",
+        "36\n",
+        "37\n",
+        "38\n",
+        "39\n",
+        "41\n",
+        "42\n",
+        "43\n",
+        "44\n",
+        "46\n",
+        "47\n",
+        "48\n",
+        "49\n",
+        "51\n",
+        "52\n",
+        "53\n",
+        "54\n",
+        "56\n",
+        "57\n",
+        "58\n",
+        "59\n",
+        "61\n",
+        "62\n",
+        "63\n",
+        "64\n",
+        "66\n",
+        "67\n",
+        "68\n",
+        "69\n",
+        "71\n",
+        "72\n",
+        "73\n",
+        "74\n",
+        "76\n",
+        "77\n",
+        "78\n",
+        "79\n",
+        "81\n",
+        "82\n",
+        "83\n",
+        "84\n",
+        "86\n",
+        "87\n",
+        "88\n",
+        "89\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_7.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_7.ipynb
new file mode 100755
index 00000000..c59dc853
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_7.ipynb
@@ -0,0 +1,832 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:cf6bdce268b89df5f08741df390466a4ba8e95dbdba72ee30279eb61d19897af"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "9 : DECISION MAKING,BREAKING BRANCHING AND LOOPING"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.1.1,page number:156"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Type an Integer\"\n",
+      "numb=int(input())\n",
+      "if numb<=5:\n",
+      "    print \"Good Choice!\"\n",
+      "print \"Thank You!\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Type an Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "3\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Good Choice!\n",
+        "Thank You!\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.2.1,page number:157"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter year : \"\n",
+      "year= int(input())\n",
+      "if year%4 == 0 and year%100 != 0 or year%400 == 0:\n",
+      "    print year,\"is a leap year\"\n",
+      "else:\n",
+      "    print year,\"is not a leap year\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter year : \n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1990\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1990 is not a leap year\n"
+       ]
+      }
+     ],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.3.1,page number:157"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter Year :\"\n",
+      "year=int(input())\n",
+      "if year%4 == 0 :\n",
+      "    if year % 100 != 0:\n",
+      "        print year,\"is leap year\"\n",
+      "    else:\n",
+      "        if year%400 == 0:\n",
+      "            print year,\" is leap year\"\n",
+      "else:\n",
+      "    print year,\"is not a leap year\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Year :\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1990\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1990 is not a leap year\n"
+       ]
+      }
+     ],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.3.2,page number:158"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter the number\"\n",
+      "numb =int(input())\n",
+      "if numb<=100:\n",
+      "    if numb>=30:\n",
+      "        print numb,\"lies between 30-100\"\n",
+      "    else:\n",
+      "        print numb,\"is outside 30-100\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the number\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "40\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "40 lies between 30-100\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.4.1,page number : 158"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter choice of city(1-4)\"\n",
+      "city = int(input())\n",
+      "if city == 1:\n",
+      "    print \"Madurai\"\n",
+      "elif city == 2:\n",
+      "    print \"Chennai\"\n",
+      "elif city == 3:\n",
+      "    print \"Mumbai\"\n",
+      "elif city == 4:\n",
+      "    print \"Calcutta\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter choice of city(1-4)\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "3\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Mumbai\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.5.1,page number:159"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "numb=int(input(\"Enter the number\"))\n",
+      "if numb == 0:\n",
+      "    print \"prints case0\"\n",
+      "elif numb == 1:\n",
+      "    print \"prints case1\"\n",
+      "elif numb == 2:\n",
+      "    print \"prints case2\" \n",
+      "else:\n",
+      "    print"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the number2\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "prints case2\n"
+       ]
+      }
+     ],
+     "prompt_number": 10
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.6.1,page number : 161"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "i =20\n",
+      "variable =array.array('i',[])\n",
+      "size = 0\n",
+      "\n",
+      "def get_array_size():\n",
+      "    print \"Array-size :\"\n",
+      "    global size\n",
+      "    size=int(input())\n",
+      "    if size<1 or size>i :\n",
+      "        get_array_size()\n",
+      "    \n",
+      "def input_fetch():\n",
+      "    global size\n",
+      "    global variabless\n",
+      "    for k in range(0,size):\n",
+      "        m=int(input())\n",
+      "        variable.append(m)\n",
+      "    return\n",
+      "\n",
+      "def sort_list():\n",
+      "    global variable\n",
+      "    variable= array.array('i',sorted(variable))\n",
+      "    \n",
+      "    return\n",
+      "    \n",
+      "def output():\n",
+      "    for k in range(0,size):\n",
+      "        print variable[k],\n",
+      "    return\n",
+      "\n",
+      "def even(number):\n",
+      "    if number/2 == 0:\n",
+      "        return 1\n",
+      "    else:\n",
+      "        return 0\n",
+      "\n",
+      "get_array_size()\n",
+      "input_fetch()\n",
+      "sort_list()\n",
+      "print \"The sorted list is :\"\n",
+      "output()\n",
+      "print \"\\nMedian : \",\n",
+      "\n",
+      "median=round((variable[(size/2)-1]+variable[size/2])/2,3) if even(size)  else float(variable[size/2])\n",
+      "print median"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Array-size :\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "10\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "7\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "8\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "-4\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "0\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "5\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "13\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "17\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "25\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The sorted list is :\n",
+        "-4 0 5 6 6 7 8 13 17 25 \n",
+        "Median :  7.0\n"
+       ]
+      }
+     ],
+     "prompt_number": 7
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.8.1,page number:163"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "index = 1\n",
+      "while index<12:\n",
+      "    print \"This is line \",index\n",
+      "    index+=1\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "This is line  1\n",
+        "This is line  2\n",
+        "This is line  3\n",
+        "This is line  4\n",
+        "This is line  5\n",
+        "This is line  6\n",
+        "This is line  7\n",
+        "This is line  8\n",
+        "This is line  9\n",
+        "This is line  10\n",
+        "This is line  11\n"
+       ]
+      }
+     ],
+     "prompt_number": 8
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.9.1,page number:164"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter Integer\"\n",
+      "total_sum=0\n",
+      "numb=int(input())\n",
+      "while numb>0:\n",
+      "    digit=numb %10\n",
+      "    total_sum+=digit\n",
+      "    numb/=10\n",
+      "print \"Sum is \",total_sum"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1776\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Sum is  21\n"
+       ]
+      }
+     ],
+     "prompt_number": 9
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.9.2,page number:165"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter Integer:\"\n",
+      "numb=int(input())\n",
+      "print numb,\"is reversed as \",\n",
+      "while numb>0:\n",
+      "    digit=numb%10\n",
+      "    print digit,\n",
+      "    numb/=10\n",
+      "print \"\\n\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer:\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1234\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1234 is reversed as  4 3 2 1 \n",
+        "\n"
+       ]
+      }
+     ],
+     "prompt_number": 10
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.10.1,page number:166"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "for index in range(1,11):\n",
+      "    print \" line \",index"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        " line  1\n",
+        " line  2\n",
+        " line  3\n",
+        " line  4\n",
+        " line  5\n",
+        " line  6\n",
+        " line  7\n",
+        " line  8\n",
+        " line  9\n",
+        " line  10\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.10.2,page number:166"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Result\"\n",
+      "print \"Index     Index Squared\"\n",
+      "print \"_____     _____________\"\n",
+      "for  index in range(1,11):\n",
+      "    print index,\"         \",index*index"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Result\n",
+        "Index     Index Squared\n",
+        "_____     _____________\n",
+        "1           1\n",
+        "2           4\n",
+        "3           9\n",
+        "4           16\n",
+        "5           25\n",
+        "6           36\n",
+        "7           49\n",
+        "8           64\n",
+        "9           81\n",
+        "10           100\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.10.3,page number:167"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "total_sum=0\n",
+      "value=100\n",
+      "for index in range(1,value+1):\n",
+      "    total_sum+=index\n",
+      "print \"Sum of 1 to \",value,\" = \",total_sum"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Sum of 1 to  100  =  5050\n"
+       ]
+      }
+     ],
+     "prompt_number": 4
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.11.1,page number:167"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def exceptive():\n",
+      "    for index in range(1,90):\n",
+      "        if index%5 == 0:\n",
+      "            continue\n",
+      "        print index\n",
+      "exceptive()"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1\n",
+        "2\n",
+        "3\n",
+        "4\n",
+        "6\n",
+        "7\n",
+        "8\n",
+        "9\n",
+        "11\n",
+        "12\n",
+        "13\n",
+        "14\n",
+        "16\n",
+        "17\n",
+        "18\n",
+        "19\n",
+        "21\n",
+        "22\n",
+        "23\n",
+        "24\n",
+        "26\n",
+        "27\n",
+        "28\n",
+        "29\n",
+        "31\n",
+        "32\n",
+        "33\n",
+        "34\n",
+        "36\n",
+        "37\n",
+        "38\n",
+        "39\n",
+        "41\n",
+        "42\n",
+        "43\n",
+        "44\n",
+        "46\n",
+        "47\n",
+        "48\n",
+        "49\n",
+        "51\n",
+        "52\n",
+        "53\n",
+        "54\n",
+        "56\n",
+        "57\n",
+        "58\n",
+        "59\n",
+        "61\n",
+        "62\n",
+        "63\n",
+        "64\n",
+        "66\n",
+        "67\n",
+        "68\n",
+        "69\n",
+        "71\n",
+        "72\n",
+        "73\n",
+        "74\n",
+        "76\n",
+        "77\n",
+        "78\n",
+        "79\n",
+        "81\n",
+        "82\n",
+        "83\n",
+        "84\n",
+        "86\n",
+        "87\n",
+        "88\n",
+        "89\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_8.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_8.ipynb
new file mode 100755
index 00000000..c59dc853
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_8.ipynb
@@ -0,0 +1,832 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:cf6bdce268b89df5f08741df390466a4ba8e95dbdba72ee30279eb61d19897af"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "9 : DECISION MAKING,BREAKING BRANCHING AND LOOPING"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.1.1,page number:156"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Type an Integer\"\n",
+      "numb=int(input())\n",
+      "if numb<=5:\n",
+      "    print \"Good Choice!\"\n",
+      "print \"Thank You!\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Type an Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "3\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Good Choice!\n",
+        "Thank You!\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.2.1,page number:157"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter year : \"\n",
+      "year= int(input())\n",
+      "if year%4 == 0 and year%100 != 0 or year%400 == 0:\n",
+      "    print year,\"is a leap year\"\n",
+      "else:\n",
+      "    print year,\"is not a leap year\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter year : \n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1990\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1990 is not a leap year\n"
+       ]
+      }
+     ],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.3.1,page number:157"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter Year :\"\n",
+      "year=int(input())\n",
+      "if year%4 == 0 :\n",
+      "    if year % 100 != 0:\n",
+      "        print year,\"is leap year\"\n",
+      "    else:\n",
+      "        if year%400 == 0:\n",
+      "            print year,\" is leap year\"\n",
+      "else:\n",
+      "    print year,\"is not a leap year\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Year :\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1990\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1990 is not a leap year\n"
+       ]
+      }
+     ],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.3.2,page number:158"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter the number\"\n",
+      "numb =int(input())\n",
+      "if numb<=100:\n",
+      "    if numb>=30:\n",
+      "        print numb,\"lies between 30-100\"\n",
+      "    else:\n",
+      "        print numb,\"is outside 30-100\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the number\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "40\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "40 lies between 30-100\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.4.1,page number : 158"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter choice of city(1-4)\"\n",
+      "city = int(input())\n",
+      "if city == 1:\n",
+      "    print \"Madurai\"\n",
+      "elif city == 2:\n",
+      "    print \"Chennai\"\n",
+      "elif city == 3:\n",
+      "    print \"Mumbai\"\n",
+      "elif city == 4:\n",
+      "    print \"Calcutta\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter choice of city(1-4)\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "3\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Mumbai\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.5.1,page number:159"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "numb=int(input(\"Enter the number\"))\n",
+      "if numb == 0:\n",
+      "    print \"prints case0\"\n",
+      "elif numb == 1:\n",
+      "    print \"prints case1\"\n",
+      "elif numb == 2:\n",
+      "    print \"prints case2\" \n",
+      "else:\n",
+      "    print"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the number2\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "prints case2\n"
+       ]
+      }
+     ],
+     "prompt_number": 10
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.6.1,page number : 161"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "i =20\n",
+      "variable =array.array('i',[])\n",
+      "size = 0\n",
+      "\n",
+      "def get_array_size():\n",
+      "    print \"Array-size :\"\n",
+      "    global size\n",
+      "    size=int(input())\n",
+      "    if size<1 or size>i :\n",
+      "        get_array_size()\n",
+      "    \n",
+      "def input_fetch():\n",
+      "    global size\n",
+      "    global variabless\n",
+      "    for k in range(0,size):\n",
+      "        m=int(input())\n",
+      "        variable.append(m)\n",
+      "    return\n",
+      "\n",
+      "def sort_list():\n",
+      "    global variable\n",
+      "    variable= array.array('i',sorted(variable))\n",
+      "    \n",
+      "    return\n",
+      "    \n",
+      "def output():\n",
+      "    for k in range(0,size):\n",
+      "        print variable[k],\n",
+      "    return\n",
+      "\n",
+      "def even(number):\n",
+      "    if number/2 == 0:\n",
+      "        return 1\n",
+      "    else:\n",
+      "        return 0\n",
+      "\n",
+      "get_array_size()\n",
+      "input_fetch()\n",
+      "sort_list()\n",
+      "print \"The sorted list is :\"\n",
+      "output()\n",
+      "print \"\\nMedian : \",\n",
+      "\n",
+      "median=round((variable[(size/2)-1]+variable[size/2])/2,3) if even(size)  else float(variable[size/2])\n",
+      "print median"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Array-size :\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "10\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "7\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "8\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "-4\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "0\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "5\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "13\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "17\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "25\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The sorted list is :\n",
+        "-4 0 5 6 6 7 8 13 17 25 \n",
+        "Median :  7.0\n"
+       ]
+      }
+     ],
+     "prompt_number": 7
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.8.1,page number:163"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "index = 1\n",
+      "while index<12:\n",
+      "    print \"This is line \",index\n",
+      "    index+=1\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "This is line  1\n",
+        "This is line  2\n",
+        "This is line  3\n",
+        "This is line  4\n",
+        "This is line  5\n",
+        "This is line  6\n",
+        "This is line  7\n",
+        "This is line  8\n",
+        "This is line  9\n",
+        "This is line  10\n",
+        "This is line  11\n"
+       ]
+      }
+     ],
+     "prompt_number": 8
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.9.1,page number:164"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter Integer\"\n",
+      "total_sum=0\n",
+      "numb=int(input())\n",
+      "while numb>0:\n",
+      "    digit=numb %10\n",
+      "    total_sum+=digit\n",
+      "    numb/=10\n",
+      "print \"Sum is \",total_sum"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1776\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Sum is  21\n"
+       ]
+      }
+     ],
+     "prompt_number": 9
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.9.2,page number:165"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter Integer:\"\n",
+      "numb=int(input())\n",
+      "print numb,\"is reversed as \",\n",
+      "while numb>0:\n",
+      "    digit=numb%10\n",
+      "    print digit,\n",
+      "    numb/=10\n",
+      "print \"\\n\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer:\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1234\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1234 is reversed as  4 3 2 1 \n",
+        "\n"
+       ]
+      }
+     ],
+     "prompt_number": 10
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.10.1,page number:166"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "for index in range(1,11):\n",
+      "    print \" line \",index"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        " line  1\n",
+        " line  2\n",
+        " line  3\n",
+        " line  4\n",
+        " line  5\n",
+        " line  6\n",
+        " line  7\n",
+        " line  8\n",
+        " line  9\n",
+        " line  10\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.10.2,page number:166"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Result\"\n",
+      "print \"Index     Index Squared\"\n",
+      "print \"_____     _____________\"\n",
+      "for  index in range(1,11):\n",
+      "    print index,\"         \",index*index"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Result\n",
+        "Index     Index Squared\n",
+        "_____     _____________\n",
+        "1           1\n",
+        "2           4\n",
+        "3           9\n",
+        "4           16\n",
+        "5           25\n",
+        "6           36\n",
+        "7           49\n",
+        "8           64\n",
+        "9           81\n",
+        "10           100\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.10.3,page number:167"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "total_sum=0\n",
+      "value=100\n",
+      "for index in range(1,value+1):\n",
+      "    total_sum+=index\n",
+      "print \"Sum of 1 to \",value,\" = \",total_sum"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Sum of 1 to  100  =  5050\n"
+       ]
+      }
+     ],
+     "prompt_number": 4
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.11.1,page number:167"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def exceptive():\n",
+      "    for index in range(1,90):\n",
+      "        if index%5 == 0:\n",
+      "            continue\n",
+      "        print index\n",
+      "exceptive()"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1\n",
+        "2\n",
+        "3\n",
+        "4\n",
+        "6\n",
+        "7\n",
+        "8\n",
+        "9\n",
+        "11\n",
+        "12\n",
+        "13\n",
+        "14\n",
+        "16\n",
+        "17\n",
+        "18\n",
+        "19\n",
+        "21\n",
+        "22\n",
+        "23\n",
+        "24\n",
+        "26\n",
+        "27\n",
+        "28\n",
+        "29\n",
+        "31\n",
+        "32\n",
+        "33\n",
+        "34\n",
+        "36\n",
+        "37\n",
+        "38\n",
+        "39\n",
+        "41\n",
+        "42\n",
+        "43\n",
+        "44\n",
+        "46\n",
+        "47\n",
+        "48\n",
+        "49\n",
+        "51\n",
+        "52\n",
+        "53\n",
+        "54\n",
+        "56\n",
+        "57\n",
+        "58\n",
+        "59\n",
+        "61\n",
+        "62\n",
+        "63\n",
+        "64\n",
+        "66\n",
+        "67\n",
+        "68\n",
+        "69\n",
+        "71\n",
+        "72\n",
+        "73\n",
+        "74\n",
+        "76\n",
+        "77\n",
+        "78\n",
+        "79\n",
+        "81\n",
+        "82\n",
+        "83\n",
+        "84\n",
+        "86\n",
+        "87\n",
+        "88\n",
+        "89\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_9.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_9.ipynb
new file mode 100755
index 00000000..c59dc853
--- /dev/null
+++ b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_9.ipynb
@@ -0,0 +1,832 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:cf6bdce268b89df5f08741df390466a4ba8e95dbdba72ee30279eb61d19897af"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "9 : DECISION MAKING,BREAKING BRANCHING AND LOOPING"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.1.1,page number:156"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Type an Integer\"\n",
+      "numb=int(input())\n",
+      "if numb<=5:\n",
+      "    print \"Good Choice!\"\n",
+      "print \"Thank You!\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Type an Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "3\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Good Choice!\n",
+        "Thank You!\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.2.1,page number:157"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter year : \"\n",
+      "year= int(input())\n",
+      "if year%4 == 0 and year%100 != 0 or year%400 == 0:\n",
+      "    print year,\"is a leap year\"\n",
+      "else:\n",
+      "    print year,\"is not a leap year\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter year : \n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1990\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1990 is not a leap year\n"
+       ]
+      }
+     ],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.3.1,page number:157"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter Year :\"\n",
+      "year=int(input())\n",
+      "if year%4 == 0 :\n",
+      "    if year % 100 != 0:\n",
+      "        print year,\"is leap year\"\n",
+      "    else:\n",
+      "        if year%400 == 0:\n",
+      "            print year,\" is leap year\"\n",
+      "else:\n",
+      "    print year,\"is not a leap year\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Year :\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1990\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1990 is not a leap year\n"
+       ]
+      }
+     ],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.3.2,page number:158"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter the number\"\n",
+      "numb =int(input())\n",
+      "if numb<=100:\n",
+      "    if numb>=30:\n",
+      "        print numb,\"lies between 30-100\"\n",
+      "    else:\n",
+      "        print numb,\"is outside 30-100\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the number\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "40\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "40 lies between 30-100\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.4.1,page number : 158"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter choice of city(1-4)\"\n",
+      "city = int(input())\n",
+      "if city == 1:\n",
+      "    print \"Madurai\"\n",
+      "elif city == 2:\n",
+      "    print \"Chennai\"\n",
+      "elif city == 3:\n",
+      "    print \"Mumbai\"\n",
+      "elif city == 4:\n",
+      "    print \"Calcutta\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter choice of city(1-4)\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "3\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Mumbai\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.5.1,page number:159"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "numb=int(input(\"Enter the number\"))\n",
+      "if numb == 0:\n",
+      "    print \"prints case0\"\n",
+      "elif numb == 1:\n",
+      "    print \"prints case1\"\n",
+      "elif numb == 2:\n",
+      "    print \"prints case2\" \n",
+      "else:\n",
+      "    print"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter the number2\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "prints case2\n"
+       ]
+      }
+     ],
+     "prompt_number": 10
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.6.1,page number : 161"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import array\n",
+      "i =20\n",
+      "variable =array.array('i',[])\n",
+      "size = 0\n",
+      "\n",
+      "def get_array_size():\n",
+      "    print \"Array-size :\"\n",
+      "    global size\n",
+      "    size=int(input())\n",
+      "    if size<1 or size>i :\n",
+      "        get_array_size()\n",
+      "    \n",
+      "def input_fetch():\n",
+      "    global size\n",
+      "    global variabless\n",
+      "    for k in range(0,size):\n",
+      "        m=int(input())\n",
+      "        variable.append(m)\n",
+      "    return\n",
+      "\n",
+      "def sort_list():\n",
+      "    global variable\n",
+      "    variable= array.array('i',sorted(variable))\n",
+      "    \n",
+      "    return\n",
+      "    \n",
+      "def output():\n",
+      "    for k in range(0,size):\n",
+      "        print variable[k],\n",
+      "    return\n",
+      "\n",
+      "def even(number):\n",
+      "    if number/2 == 0:\n",
+      "        return 1\n",
+      "    else:\n",
+      "        return 0\n",
+      "\n",
+      "get_array_size()\n",
+      "input_fetch()\n",
+      "sort_list()\n",
+      "print \"The sorted list is :\"\n",
+      "output()\n",
+      "print \"\\nMedian : \",\n",
+      "\n",
+      "median=round((variable[(size/2)-1]+variable[size/2])/2,3) if even(size)  else float(variable[size/2])\n",
+      "print median"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Array-size :\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "10\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "7\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "8\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "-4\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "0\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "5\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "13\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "17\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "25\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "6\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The sorted list is :\n",
+        "-4 0 5 6 6 7 8 13 17 25 \n",
+        "Median :  7.0\n"
+       ]
+      }
+     ],
+     "prompt_number": 7
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.8.1,page number:163"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "index = 1\n",
+      "while index<12:\n",
+      "    print \"This is line \",index\n",
+      "    index+=1\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "This is line  1\n",
+        "This is line  2\n",
+        "This is line  3\n",
+        "This is line  4\n",
+        "This is line  5\n",
+        "This is line  6\n",
+        "This is line  7\n",
+        "This is line  8\n",
+        "This is line  9\n",
+        "This is line  10\n",
+        "This is line  11\n"
+       ]
+      }
+     ],
+     "prompt_number": 8
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.9.1,page number:164"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter Integer\"\n",
+      "total_sum=0\n",
+      "numb=int(input())\n",
+      "while numb>0:\n",
+      "    digit=numb %10\n",
+      "    total_sum+=digit\n",
+      "    numb/=10\n",
+      "print \"Sum is \",total_sum"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1776\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Sum is  21\n"
+       ]
+      }
+     ],
+     "prompt_number": 9
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.9.2,page number:165"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Enter Integer:\"\n",
+      "numb=int(input())\n",
+      "print numb,\"is reversed as \",\n",
+      "while numb>0:\n",
+      "    digit=numb%10\n",
+      "    print digit,\n",
+      "    numb/=10\n",
+      "print \"\\n\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Integer:\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1234\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1234 is reversed as  4 3 2 1 \n",
+        "\n"
+       ]
+      }
+     ],
+     "prompt_number": 10
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.10.1,page number:166"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "for index in range(1,11):\n",
+      "    print \" line \",index"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        " line  1\n",
+        " line  2\n",
+        " line  3\n",
+        " line  4\n",
+        " line  5\n",
+        " line  6\n",
+        " line  7\n",
+        " line  8\n",
+        " line  9\n",
+        " line  10\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.10.2,page number:166"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "print \"Result\"\n",
+      "print \"Index     Index Squared\"\n",
+      "print \"_____     _____________\"\n",
+      "for  index in range(1,11):\n",
+      "    print index,\"         \",index*index"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Result\n",
+        "Index     Index Squared\n",
+        "_____     _____________\n",
+        "1           1\n",
+        "2           4\n",
+        "3           9\n",
+        "4           16\n",
+        "5           25\n",
+        "6           36\n",
+        "7           49\n",
+        "8           64\n",
+        "9           81\n",
+        "10           100\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.10.3,page number:167"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "total_sum=0\n",
+      "value=100\n",
+      "for index in range(1,value+1):\n",
+      "    total_sum+=index\n",
+      "print \"Sum of 1 to \",value,\" = \",total_sum"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Sum of 1 to  100  =  5050\n"
+       ]
+      }
+     ],
+     "prompt_number": 4
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "9.11.1,page number:167"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "def exceptive():\n",
+      "    for index in range(1,90):\n",
+      "        if index%5 == 0:\n",
+      "            continue\n",
+      "        print index\n",
+      "exceptive()"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1\n",
+        "2\n",
+        "3\n",
+        "4\n",
+        "6\n",
+        "7\n",
+        "8\n",
+        "9\n",
+        "11\n",
+        "12\n",
+        "13\n",
+        "14\n",
+        "16\n",
+        "17\n",
+        "18\n",
+        "19\n",
+        "21\n",
+        "22\n",
+        "23\n",
+        "24\n",
+        "26\n",
+        "27\n",
+        "28\n",
+        "29\n",
+        "31\n",
+        "32\n",
+        "33\n",
+        "34\n",
+        "36\n",
+        "37\n",
+        "38\n",
+        "39\n",
+        "41\n",
+        "42\n",
+        "43\n",
+        "44\n",
+        "46\n",
+        "47\n",
+        "48\n",
+        "49\n",
+        "51\n",
+        "52\n",
+        "53\n",
+        "54\n",
+        "56\n",
+        "57\n",
+        "58\n",
+        "59\n",
+        "61\n",
+        "62\n",
+        "63\n",
+        "64\n",
+        "66\n",
+        "67\n",
+        "68\n",
+        "69\n",
+        "71\n",
+        "72\n",
+        "73\n",
+        "74\n",
+        "76\n",
+        "77\n",
+        "78\n",
+        "79\n",
+        "81\n",
+        "82\n",
+        "83\n",
+        "84\n",
+        "86\n",
+        "87\n",
+        "88\n",
+        "89\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
-- 
cgit